Operator
Ladies and gentlemen, good day and welcome to the Sterlite Technologies Limited Q2 FY '27 earnings conference call. As a reminder, all participant lines will be in the listen-only mode, and there will be an opportunity for you to ask questions after the presentation concludes.
Should you need assistance during the conference call, please signal an operator by pressing star then zero on your touchtone phone. Please note that this conference is being recorded.
I now hand the conference over to Mr. Rahul Darak, Head of Investor Relations.
Thank you and over to you, sir.
Rahul Darak
Thank you, Steve. Good day everyone and welcome to STL's Q2 and H1 FY '27 earnings call.
To take us through the results and answer your questions today, we have with STL's senior management represented by Mr. Ankit Agarwal, our Managing Director, and Mr.
Ajay Jhanjhari, Chief Financial Officer. Before we proceed with the call, let me remind you that the discussion today may contain forward-looking statements that may involve known or unknown risks, uncertainties, and other factors.
It must be viewed in conjunction with our business risks that could cause future results, performance, or achievement to differ significantly from what is expressed or implied in such forward-looking statements. Please note this also applies to the Lakshya targets that will be discussed on today's call.
We have also uploaded results and earnings call presentation on STL's website and same is also available on the stock exchanges. We'll begin today's call with a brief overview of our performance for the quarter and the first half of the financial year, followed by a brief Q&A session.
With that said, I now hand over the call to our Managing Director, Mr. Ankit Agarwal.
Ankit Agarwal
Thank you, Rahul. Good day everyone.
I'll begin by highlighting a few key takeaways from our investor presentation, and Ajay, our CFO, will then walk you through the financials. STL is a global leader in digital connectivity infrastructure, serving data centers, telcos, citizen networks, and large enterprises.
Our optical connectivity portfolio spans fiber to fiber cables, specialty cables, connectivity solutions. We're also India's number one end-to-end optical manufacturer with about 9% global optical fiber cable market share outside China.
With 35+ years of leadership and more than 805 global patents filed and granted and 10+ advanced manufacturing facilities with zero waste to landfill and zero liquid discharge, STL is leading the next wave of the global digital infrastructure buildout. We're amongst the few companies in the world with presence across the value chain, from glass to gigabit.
Starting with the purest grade of silicon, which we transform through advanced processes like silicon tetrachloride formation, chemical vapor deposition, and high-precision sintering, we create ultra-pure glass preforms, which is the backbone of optical fiber. From there, we draw the highest grade fiber, design high-density cables, and develop reliable connectivity products that power data centers and telecom networks worldwide.
This full-stack integration right from the raw material to network deployment gives STL a unique edge in quality, cost efficiency, and innovation across the connectivity value chain. This deep integration also gives us one of the most complete portfolios across the industry, from specialty and next-generation fibers to high-density cables to plug-and-play connectivity for fiber to the home and AI data center architecture.
Back in September, we laid out Lakshya, our growth roadmap through FY '29 with the ambition of becoming the top five global connectivity players and reach 20,000 crores in revenue. In FY '27, the first year of Lakshya, we're putting this plan into motion across five clear execution priorities.
On the market side, we're actively shifting our revenue mix towards high-value-added integrated connectivity solutions while rapidly scaling our footprint in data center segment. To maintain our product edge, we're committing 2% of our annual revenue into R&D for next-generation optical platforms.
At the same time, we're driving margin expansion by staying relentlessly focused on cost efficiencies and delivering stronger value to our customers. Finally, to power this entire growth cycle, we're expanding our preform, fiber, and cable capacities by 50% and building a new greenfield facility for pre-terminated solutions.
All of this is backed by an annual capex commitment of around 1,000 crores per year through FY '29. As you all know, currently we're at the intersection of three powerful multi-year investment cycles: data centers, 5G and 6G networks, and fiber-to-the-x.
Over the last few quarters, each of these cycles has only become stronger. Data centers remains the fastest growing driver for optical fiber demand.
CRU recently upgraded its 2026 demand projections for this segment to 89% year-on-year, up sharply from 63% last quarter. This is underscored by acceleration of investments by hyperscalers and neoclouds, with Morgan Stanley revising its 2026 forecasts upward from $805 billion to $978 billion and projecting a $1.5 trillion of investment in 2027.
On mobile networks, 5G adoption continues to scale rapidly, with global 5G subscriptions projected to reach 6.4 billion by 2031 and India alone accounting for 1 billion in the same timeframe. On top of this 5G expansion, global 6G subscriptions are forecast to cross 180 million by the end of 2031.
Looking at FTTx deployments, deployments accelerating worldwide, expanding from 157 million fiber kilometers in 2025 to roughly 166 million fiber kilometers by 2030. In the US alone, more than 140 million new homes will be connected with fiber by 2030, backed by massive government initiatives like BEAD in the US and BharatNet in India.
Together, these three converging cycles create a structured long-term demand tailwind for optical fiber and connectivity, positioning STL right at the center of the world's next digital infrastructure buildout. Moving on, slide 10 delves into how the AI revolution and rapid data center expansion are creating a once-in-a-generation opportunity for optical connectivity.
Global data center capacity is expected to grow from about 82 gigawatts to about 219 gigawatts by 2030, with over 70% of the total demand coming from AI-specific infrastructure. AI is driving a fundamental step change in fiber intensity across three core dimensions.
First is scale-out, which appears between the racks. Fiber per switch rack has skyrocketed from 500 fibers in the cloud era to 12,000 in today's 72-GPU AI nodes, heading towards 16,000 fibers in the upcoming architectures.
Next is scale-across, which connects multiple AI clusters, buildings, and data centers so they can operate as one unified AI infrastructure. Every new site multiplies interconnects: two data centers need one link, but six data centers need as many as 15 or more.
Finally, scale-up, which takes place at the GPU rack level. As speed transitions from 400 gig to 800 gig and onwards to 1.6 terabit, copper hits its physical performance limits and making optical fiber simply non-negotiable.
Together, these three dynamics present a structural step change in fiber intensity. With our Neuralis end-to-end AI DC portfolio, STL is uniquely positioned to capture this multi-year structural growth opportunity across the stack.
Looking at slide 11, let's look at India's infrastructure landscape, which is rapidly emerging as one of our most compelling long-term structural tailwinds. Looking at the capacity rollout, India's live DC capacity has reached approximately 1.8 gigawatts following a record 258 megawatt additions in the first half of FY '27 alone.
Over the next years, this installed capacity is set to increase nearly sixfold to almost 10.5 gigawatts by 2031. What makes this investment cycle particularly powerful is the breadth of commitments across the board.
Hyperscalers like Google, Meta, Microsoft, Amazon are deploying tens of billions of dollars. On the other side, we have Indian conglomerates like Tata, Adani, and Reliance laying out massive long-term capacity plans as well.
Over the last few quarters itself, we've seen massive new announcements coming from Meta and Reliance pushing forward with almost 3 gigawatts of development plans. To Australia-based AirTrunk, which is committing almost $30 billion across Maharashtra and Andhra Pradesh for overall 5 gigawatts of data center capacity.
Adding to this momentum are landmark commitments like Adani talking about over $100 billion to build out 5 gigawatts of green AI data centers by 2035. This includes AdaniConneX partnering with CoreWeave to build a 240 megawatt campus in Navi Mumbai, which will be powered by NVIDIA's Vera Rubin platform.
Overall, a supportive policy environment with state incentives such as stamp duty waivers and 10 to 20-year electricity duty exemptions, power availability, and very importantly the tax holidays extending into 2047 is further de-risking and accelerating this data center buildout. Every dollar of this data center capex has a direct multiplier on fiber intensity across DCI, metro, and long-haul networks.
The next slide reinforces how big telecom operators and the big tech companies from AT&T, British Telecom, and Airtel to NVIDIA and AWS continue to back optical fiber as the base of digital future across 6G, broadband, data centers, and AI. The takeaway is simple: fiber remains the core backbone of all digital infrastructure globally.
Now let's take a look at the global market context. We see a clear multi-year upcycle in global fiber demand taking shape.
According to CRU, global optical cable demand has been upgraded again and is now expected to reach 850-odd million fiber kilometers by 2031, reflecting a strong 7.5% CAGR through 2031. Looking ahead, growth will be increasingly concentrated in North America and APAC ex-China.
North America continues to be powered by AI-led data centers, DCI builds, and broadband rollouts, while India and Southeast Asia are driving incremental growth across APAC ex-China. In fact, CRU expects AI data centers to capture 1/3 of total volume share by 2030 in markets outside of China.
Overall, this points to sustained multi-year upcycle in fiber demand, with STL's focus markets expected to lead demand growth, with CRU projecting 15.7% CAGR in 2030. We're seeing a strong momentum in winning new business, and it shows clearly in our order intake.
In the first half of FY '27, we secured orders worth 32,000 crores. This is roughly four times the orders we won in the whole of FY '26.
The largest win this quarter is a new five-year agreement with a potential value of $1.2 billion. It is with another global hyperscaler for AI-ready optical solutions.
This builds on the $1.11 billion product award letter for optical connectivity that we announced last quarter from another hyperscaler. Together, these give us multi-year demand visibility with some of the world's largest AI infrastructure players.
We're also winning across our other core segments. We have signed multi-year supply agreements with major global telecom operators for high-density optical connectivity assemblies.
In India, we've secured a significant optical cable supply contract with a leading telecom operator. As a result, our order book today is well spread across customer segments, product categories, and geographies.
More importantly, it gives us a much stronger visibility on our FY '29 Lakshya targets than what we had even when we announced it. On market position and attach rate trends, our global ex-China OFC market share increased to 9% in H1 FY '27, up from 7% in first half of FY '26.
Turning to optical connectivity, last quarter we shared that we aim to take our attach rate above 20% from this quarter onwards. I'm pleased to report that our attach rate has reached an all-time high of 24% in H1 FY '27, up from 20% in H1 FY '26.
This was achieved on a much larger OFC revenue base. We remain fully focused on driving this 25% and beyond for the current financial year.
This performance clearly demonstrates our strategic pivot towards selling higher value-added integrated solutions than standalone products, which is gaining strong traction in the market. Innovation continues to be a key differentiator for STL, and this quarter delivered strong momentum across all these fronts.
On key product developments, we strengthened our Neuralis portfolio with high-density pre-terminated fiber trunks, launched a plenum-rated portfolio for inside data hall connectivity, and transitioned hollow fiber cable into the first commercial pilot phase. On sustainability and next-generation technology leadership, our Chhatrapati Sambhajinagar plants transitioned to 100% green power, slashing our fiber carbon footprint by over 80%.
We're very proud of this. A standout achievement this quarter was STL's recognition at the IAM's Asia IP Elite 2026 list.
IAM is a global benchmark of IP strategy, and this elite recognition confirms that our deep patent portfolio across glass chemistry, fiber geometry, and connectivity design directly positions STL as an indispensable technology leader in the global AI ecosystem. Our innovation engine is backed by deep IP portfolio of over 805 patents, with 49 new filings this quarter, and has been recognized through multiple global awards.
These advancements reinforce our position as a true technology leader building future-ready capabilities for AI and cloud networks. Turning to our product portfolio, we're making tremendous progress with our Neuralis, our purpose-built portfolio in the AI era of data centers, which addresses two mission-critical needs: AI white space connectivity and high-speed data center interconnect, where fiber density, speed, and simplicity matter the most.
The highlight this quarter is the launch of our pre-terminated trunk assemblies in September. For our customers, this means faster deployment, fewer issues on site, and data centers that come online sooner.
Put simply, they are factory-built plug-and-play installations. Every assembly is 100% factory tested and arrives ready to install with the latest high-density connector technology.
Neuralis is emerging as a central nervous system of the modern data centers, built for AI and ready to serve what's coming next. By leveraging STL's full vertical integration, Neuralis enables faster deployment and massive GPU clustering.
It reduces deployment complexity and accelerates time to service. Supported by local manufacturing in South Carolina, this launch strengthens our position with the US hyperscalers and neocloud providers.
Slide 19 highlights STL's leadership in the next-generation optical fiber portfolio. It directly addresses optical physics demands of the AI DC era through three flagship technologies.
Firstly, our G.654.E fiber is now fully commercialized and delivers 30% lower signal loss. Secondly, hollow-core fiber, our HCF cable that offers between 30% to 47% lower latency, has transitioned into first commercial pilot phase.
Finally, our award-winning multicore fiber, expanding data capacity between four to seven times within the same footprint, with successful real-world deployments of multicore already underway in India and the UK alongside partners like C-DOT, IIT Madras, and Cornelis. This portfolio firmly positions STL to power the high-density, ultra-low latency infrastructure required for tomorrow's AI workloads.
Now I'll hand over to Ajay to take you through the financials.
Ajay Jhanjhari
Thank you, Ankit, and thanks everyone for joining us today. I am happy to take you through our financial highlights for Q2 and H1 FY '27.
If Q1 was historic, Q2 has raised the bar again. For the second consecutive quarter, STL has delivered its highest ever performance across revenue, EBITDA, and PAT.
This quarter revenue reached INR 2,529 crore, representing growth of 145% year-on-year basis and 32% quarter-on-quarter basis. On an H1 basis, revenue grew to INR 4,439 crore, up 116% compared to H1 FY '26.
Moving to EBITDA and margins, our operational EBITDA for Q2 FY '27 came in at INR 685 crore, delivering 27.1% margins, a significant quarter-on-quarter expansion of 624 basis points. On an H1 basis, operational EBITDA reached INR 1,082 crore at a 24.4% margin, reflecting strong profitability across the first half.
Note that reported EBITDA for Q2 FY '27 was INR 846 crore, which includes a one-time net gain of INR 161 crore from a US tariff refund. Excluding this one-off item, our 27% operational margin reflects strong underlying fundamentals driven by higher capacity utilization, a richer product and customer mix, and an increasing share of high-value optical connectivity.
Turning to profitability, PAT for Q2 FY '27 reached a record INR 517 crore, driven by strong revenue growth, margin expansion. For the first half, PAT reached INR 714 crore, up from INR 14 crore in H1 FY '26, reflecting the strong operating leverage in our business.
In summary, these results demonstrate strong revenue momentum, expanding margins, and bottom-line execution, setting us up remarkably well for the remainder of FY '27. On the segment side, while telecom and citizen networks continue to be a core pillar, our data center segment saw strong momentum, contributing 33% in H1 FY '27, keeping us firmly on track towards scaling this segment to 50% of revenues in the current fiscal.
From a geographic standpoint, our revenue mix continues to reflect strong global momentum. North America's share stood at 61% in H1 FY '27, driven by robust demand across AI and cloud infrastructure, while Europe contributed 21% and rest of the world represented 18%.
While North America remains our key growth engine driven by hyperscaler demand, our presence across Europe and ROW gives us a strong global footprint to capture market upside. Moving to our order book, our open order book stands at record 35,274 crore, up 4.6 times from 7,687 crore at the start of this financial year.
This reflects strong order inflows and the confidence of customers are placing on us through long-term commitments. Of this, about 3,021 crore is scheduled for execution in Q3 FY '27 and the rest over Q4 FY '27 and beyond.
I want to highlight a structural change in how our revenue is built. Historically, a meaningful share of each quarter's revenue came from spot orders won and delivered within the same quarter.
As our multi-year agreements with hyperscalers and telecom operators scale up, more of our revenue now comes from the scheduled backlog and spot business makes up a negligible share. This is deliberate part of our Lakshya strategy.
It gives us more predictable revenue, better capacity planning, and more stable realizations through the cycle. On slide 25, we have shared an abridged snapshot of our reported numbers for your reference.
On the balance sheet, our net cash balance has improved to INR 703 crore from 483 crore reported last quarter, and we continue to be a net debt-free company. I am also glad to share that our strengthened financial profile is now reflected in our credit ratings.
CRISIL has further upgraded our long-term rating to AA stable from AA- and reaffirmed our short-term ratings at A1+. With this, both CRISIL and ICRA now rate STL at AA stable.
Our disciplined capital allocation entails a mix of brownfield expansion, preform, fiber, and cable capacity by 50%, and a greenfield facility for pre-term solutions with a total capex of 1,000 crore per year from 2027 to 2029. Finally, on slide 26, our Lakshya growth roadmap.
When we unveiled Lakshya, we targeted revenue of INR 20,000 crore in FY '29, about 4x our FY '26 revenue, with an EBITDA margin of over 27%. The strong margin expansion we are delivering today combined with the multi-year visibility from our record order book gives us stronger confidence to raise the bar on profitability.
Accordingly, we are upgrading our FY '29 EBITDA margin targets to above 30%, up from 27% earlier, while maintaining our FY '29 revenue targets at 20,000 crore. This performance underscored that we are not just growing, we are building a higher-margin, highly scalable business for a long term.
With that, I'll hand it back to Ankit for an update on our social impact initiatives and closing remarks.
Ankit Agarwal
Thank you, Ajay. Our CSR and sustainability initiatives continue to create deep, lasting, and measurable impact across healthcare, education, women empowerment, and the environment, and you will find details in the presentation.
We remain committed to achieve net zero by 2030, and this quarter our factories in Chhatrapati Sambhajinagar transitioned to 100% green power. Together with our commissioned green hydrogen and oxygen plants, we have reduced the carbon footprint of our core optical fiber by over 80% while maintaining zero waste to landfill and zero liquid discharge standards.
This disciplined approach to governance and sustainability continues to be recognized and backed by Synesgy A rating and over 100 ESG awards to date. Now before we open the floor for Q&A, I'd like to step back for a moment.
When we announced Lakshya in September, we set out an ambitious goal: to become one of the top five optical connectivity players in the world. Two months into the journey, the goal is starting to show our results.
We've delivered back-to-back record quarters, order book has nearly doubled, and attach rate has reached an all-time high. The confidence comes from this performance and has allowed us to raise our FY '29 margin ambitions to above 30%.
The world is building infrastructure for the AI era, and that infrastructure runs on optical fiber. With our full glass-to-gigabit integration, deep technology portfolio, and longstanding customer partnerships, STL is well placed to help build it and create it.
We are proud of what we have achieved so far and we remain focused on the execution. There's a lot of work ahead and we're excited about it.
We're excited about putting India on the global AI map. Thank you.
I'll now hand over to the operator and open the floor to questions. Jai Hind.
Operator
Thank you, sir. We will now begin the question and answer session.
Anyone who wishes to ask a question may press star and one on your touchtone telephone. If you wish to remove yourself from the question queue, you may press star and two.
Participants are requested to use handset while asking a question. Ladies and gentlemen, we will wait for a moment while the question queue assembles.
The first question comes from the line of Achal Lohade with Nuvama Institutional Equities. Please go ahead.
Achal Lohade
Hi team. Congratulation on great set of numbers.
Three questions actually. First, with respect to the target Lakshya, 20,000 crore revenue remain unchanged while the margin got upgraded.
If you could help us understand what has driven this upgrade in the margin? Is it largely driven by the connectivity aspect of the business or something else?
Secondly, is there any further scope for even revenue target upgrade?
Ankit Agarwal
Hi Achal. Thank you for your question.
I think what we've done for now is basically looked at the order book that we have and improvements in our order book that we've showcased going towards 35,000 crores. That's given us a source of confidence of how we see our performance going forward.
As we've shared, we've clearly been able to move our mix strongly towards data center portfolio, which has higher margins, and we've also improved our attach rate. Combined these things, and looking at how these are expected to grow going forward, this gave us confidence to improve our visibility from 27% to 30%.
Right now, that's the visibility that we have, and we continue to target the 20,000 crores, and we'll continue to evaluate how our order book and execution is moving on our capacities, and then we can update on anything else in the future.
Achal Lohade
Got it. The second question is with respect to the order book.
Are there more orders in the pipeline, the sizable orders, etc.? How the order pipeline is looking like, if you could give some more color on that aspect, especially from the North America?
Ankit Agarwal
I would first put a caveat that we continue to work both with the telecom operators, neutral fiber providers, as well as data center companies. As we shared in our readout, we're broadly looking at really focusing on long-term partnerships and more and more technology partnerships with these customers.
That's majority of our conversations that are happening. We clearly want to also have a nice diverse set of customers both from types of customers, but also geography of customers, and that's also what we've been working on.
As we stand today, we feel confident. We continue to have conversations with other data center companies and telecom operators.
We're definitely looking at as we get a good sense of their requirements, as some of our capacities come up in the coming 2 to 3 years, how we can maximize further partnerships. That's something we're working on.
Achal Lohade
Got it. Lastly, if you could provide some color in terms of how the pricing scenario playing out on the cable and also on the preform and the fiber prices, ideally in last couple of quarters how it is trended and what is the expectation one would have at this stage?
Ankit Agarwal
We don't comment on prices specifically. Broadly, from our side, our focus has been more and more of the very high-end cables, very high-end designs that we've been focusing on, and you would have seen we've launched some of these designs in the last few months as well.
As we move forward, more and more of our sales will be these high-end products, which all come under Neuralis portfolio. Equally, our focus will be to some of our high-end connectivity products that we've launched, like CONCAT, like MMC connectivity, which are really at the cutting edge.
More and more of our focus will be to supply those products into the market.
Achal Lohade
Got it. With respect to the raw material availability, there have been I'm
Operator
sorry to interrupt, Mr. Achal,
Achal Lohade
request you to,
Operator
yeah. Thank you so much.
I'll fall back in the queue. No problem.
Thank you.
Ankit Agarwal
Thank you.
Operator
Ladies and gentlemen, in order to ensure that the management is able to address questions from all participants, please limit your questions to two per participant. The next question comes from the line of Rabindranath Nayak with Nirmal Bang Securities.
Please go ahead. Rabindranath, your line has been unmuted.
Please go ahead with your question.
Rabindranath Nayak
Yeah. Am I audible?
Operator
Yes, sir.
Rabindranath Nayak
Yeah. Thank you for the opportunity and congratulations for a good set of numbers.
Sir, two to three questions from my side. We got a refund of around 161 crores, and is there any further refund is expected?
That is one question regarding that. There is an impairment of 39 crores, and there is a additional depreciation related to that, 22 crores.
What is that pertaining to? Why despite the reduction in debt and also the reduction in borrowing, why the interest cost has gone up by 15% Y-o-Y in this quarter?
Just the receivables has also gone up. Is it a big worry so for us?
The final question regarding if you can share something on what is the DC fiber contribution in this total revenue, and what is the contribution of attach rate revenue on the DC side in a contribution? Total, see, if I'm talking about 500 crores of attach revenue in this, what is the contribution of DC attach revenue in this attach rate?
If you can answer those questions. Thank you.
Ajay Jhanjhari
Okay. Hi, thank you.
Firstly, on the refund, there is a process through which we get all these refunds. Broadly, we have got refund of almost everything.
There is a phase three which is going on currently and there is a small amount which we have already applied for. That depends on getting that refund.
In relation to the impairment and the increase which you are seeing in depreciation, that is broadly related to one of our subsidiaries, which is Speedon Network. There we have taken the impairment to square it off in full.
On your question related to finance cost, broadly in order to reduce our gross debt also, we have prepaid few of the loans which were due at a later stage, and there were some penalties related to the prepayments which we have squared off. Going forward, we'll look forward to reduce the net finance cost subsequently,
Rabindranath Nayak
and
Ajay Jhanjhari
that will be visible from Q3 onwards.
Rabindranath Nayak
Okay. About Yeah.
The data center contribution of fiber and also attach rate, can you please comment on this, please?
Ankit Agarwal
We don't call that out specifically for competitive reasons. What we have called out is of our total sales how much is coming from the DC segment.
As we've also shared from our order book as well, you can get a good sense that a good portion of our order book also as we stand today is from the DC segment given the two deals we've announced. Hopefully that gives you some sense of where the value and the margins are coming from.
Rabindranath Nayak
Okay. Is the attach rate is a part of the order book or it is not a part of the order book, attach revenue?
Ankit Agarwal
To summarize, we call attach rate related to our accessories business, and that's also forms part of the order book which we are reporting on a quarterly basis.
Operator
Thank you, sir. The next question comes from the line of Dev Jatia with Seven Rivers.
Please go ahead.
Dev Jatia
Hi, Ankit. Congratulations to you and your team on a stellar set of numbers.
My question is more macro in nature. There's a key debate in the US whether the very high level of AI capex can be sustained if bond yields continue to spike, raising the cost for hyperscalers to continue funding this buildout through debt.
Now I appreciate our industry forecast on fiber demand, but my question is more specific about what happens beyond FY '29. What level of annual global fiber demand growth or AI capex growth would be required for us to continue growing at a strong rate beyond FY '29?
Ankit Agarwal
Hi Dev. Thank you.
Look, if we just break it up broadly, so far where our conversations with the data center companies, I think broadly there continues to be strong investments from the balance sheet. Even Meta announced its results yesterday and continues to be quite strong, around $140 billion in capex as an example.
I think to your point in terms of longer term, say '29, 2030 onwards, one of the things that we're seeing interestingly from the power side, for example as a benchmark, is that there are contracts going out on the power side easily into '31, '32, and beyond. Clearly there is a macro commitment and focus on the hyperscalers to continue to build this out at least for 7 to 10 years with fair level of clarity.
Equally, that gives us comfort as well, and also in our conversations that these investments certainly by the larger hyperscalers will continue well beyond 2030.
Dev Jatia
Got it. Thank you.
Operator
Thank you. The next question comes from the line of Abhay Joshi with Baroda BNP Paribas Mutual Fund.
Please go ahead.
Abhay Joshi
Hey, hi. Congratulations to team on the great sets of number.
My first question is on the margin guidance. Of course, you have raised the margin guidance from 27 to 30 for FY '29.
If I look at the margin guidance earlier for FY '27, it was 23% when you delivered 20% margin. Now you are already at 27%.
How should look about the margins for the FY '27 if you can give the color? Because from past two quarters we have been raising the guidance for FY '27.
Just in terms of how we should look FY '27 as a margin per se.
Ajay Jhanjhari
We would definitely like to perform or better what we have reported in Q2 of this financial year. The target of Lakshya aligns with the target of what we plan to or try to achieve from Q3 onwards.
The reason for increase in margin consecutively is because you note there's a change in our business mix. A lot of revenue is coming from the data center segment, which is more profitable than our normal telco business.
Abhay Joshi
Sure. If I look at your H1 margins, it already at 24, which is higher than your earlier stated margins.
Do we expect to deliver
Ajay Jhanjhari
23%.
Abhay Joshi
Do we expect to deliver better than that? That is my question.
Ajay Jhanjhari
Yes, sir. This is what I am saying.
We plan to deliver results which are in alignment with our project Lakshya, wherein we have already announced to increase it to 30%.
Abhay Joshi
Sure. Fair enough.
My next question is on the order book. If I look at your net new orders for this quarter ex of the 1.2 billion contract we had, which was so very strong, 7,000 crore-plus number.
Any break up in terms of what will be the mix here? It is still predominantly the data center or it is the mix of both DC plus telco?
Ankit Agarwal
Outside of what we have shared, then we continue to secure long-term contracts with the telecom operators and also neutral fiber companies. These neutral fiber companies are effectively providing long-term leases and capacities either to the telcos or to the data centers.
These could be large players in Europe or US as well. We also announced one large telco deal in India as well, which is in the public domain.
Outside of what we've announced, then we continue to have strong partnerships on the non-DC side as well.
Abhay Joshi
Just lastly from my side, what will be any guidance in terms of how much attach rate would look at for to reach FY '29 guidance, like currently 24? How much any targets for attach rate?
Ankit Agarwal
No, I think look, we've reached a good level now, and clearly, we want to keep growing this top line quarter-on-quarter. I think we're looking at that closely, and more and more as I guided, we want to sell more and more of our portfolio as a solution, be the cable and connectivity or the cable and termination.
That's what we're working on. We're also building a new greenfield site as part of our capex to increase our termination capability.
There's work going on in the background, but at a macro level, I think we've reached a good stage now and we'll continue to work with our customers on new products and new solutions to see how we can grow the attach rate from here.
Operator
Thank you, sir. Our next question comes from the line of Aritra Banerjee with Nomura.
Please go ahead.
Aritra Banerjee
Yes, thanks for the opportunity and congrats for a very good set of numbers. My first question was regarding this hollow-core and multicore fibers.
By when do you think these can be fully commercialized? On the industry side, by when do you think the industry applications for these hollow-core and multicore fibers will become mainstream, at least in the US going forward, if you could provide some color on that, please?
Ankit Agarwal
I think look, firstly, I'm quite proud, as Indian company we've built the hollow-core and multicore. We've also done some trials in UK for multicore.
Most recently, we did a trial for the hollow-core as well in India. That's something that we are also working on.
I think one thing to understand also is not only are there challenges in the manufacturing of it, there's significant challenges for the entire industry around the installation and maintenance of these networks. I think those are some of the areas that as an industry we're all working in partnership to solve for.
The performance on the network is very real, very tangible. The latency improvement is anywhere between 30% to 40%, and in the case of multicore, you effectively for the same diameter you're almost getting 4 to 7 times more capacity.
It's clearly very, very valuable in various network scenarios. We definitely are bullish about the growth of these technologies, but I would say that probably it'll be in the time frame of another 1.5 to 2 years where the scale of these starts improving.
We are also actively working both internally to improve our production capabilities, but equally with installers and customers to make sure that these can be deployed successfully and ultimately be scaled up in the field.
Aritra Banerjee
Understood, sir. My second question is regarding the payable days.
That has seen a very sharp fall over the past few quarters. Just wanted to understand is this a level where this will stabilize or can we expect further reduction going forward?
What was the reasons for the drop in the first place in the payable days?
Ajay Jhanjhari
See, broadly, you need to link it to our net working capital days, which while has increased slightly in Q2. Broadly, we aim to remain in the range of 45 to 50 days of net working capital cycle.
Currently, this is a supply-constant market, a lot of materials which we have to buy, the payment terms have changed. We broadly expect it to remain stable going forward.
Equally, at the same time, we are working a lot on improving our debtors and the inventory levels, which will be reflected from next quarters.
Operator
Thank you, sir. Our next question comes from the line of Dhruv Sitlani with Yamura Capital.
Please go ahead.
Dhruv Sitlani
Sir, thank you for the opportunity to interact with the management today. Firstly, congratulations on a stellar set of number and commendable execution.
I have a couple of questions I would like to touch upon. My first question is what was our average utilization for the quarter, and by when do we expect to get full utilization for the current capacities?
Ankit Agarwal
Thank you for your question. We've not been sharing specific numbers, at least recently.
Broadly, what we've been talking about are some of our constraints around some of our raw materials. We've talked about things like germanium, helium, etc.
Happy to share that we have seen an improvement in our ability to procure our raw materials. We've also seen an improvement in being able to diversify in some of our key raw materials.
Overall, as a result of this, our utilization continues to improve quarter-on-quarter. Clearly we're in this important period where we're improving our utilization.
At the same time, we want to start executing some of our capacity projects and bringing those online in the next few quarters.
Dhruv Sitlani
Thank you. That was really helpful.
My second question is that our company seem to be at AIDC cloud share of 40% to 42% in quarter two, and our peers seem to already be at 65%. By when do we expect to get at those levels?
Ankit Agarwal
I would put it slightly differently. For us, what we're very, very focused on is securing long-term contracts and making sure whatever we sell is through long-term partnerships.
The second part is rather than anything that is commoditized, low-end fiber or cable, that we're reducing that significantly. More and more of what we sell into the market will really be at the high end of the specs, whether it's in India, Europe, or the US.
That's really what we're focused on. I think broadly we've guided that we feel confident that our DC share will be close to around 50%.
Then I think by design that's something that we're driving, that it should be in this 50% to 60% share because we also want to have a good mix of customers both from a geography perspective as well as customer base.
Operator
Thank you. Ladies and gentlemen, you are requested to limit your questions to one per participant.
If you have any follow-up question, please rejoin the queue. The next question comes from the line of Rahul Agrawal with Everflow Partners.
Please go ahead.
Rahul Agrawal
Thanks, Ankit, and congratulations on a spectacular set of numbers. My question pertains to the attach rate for the business with connectivity solutions.
Some of the global peers are north of 100% on attach rate. From a longer-term perspective, where do you see the trajectory on the attach rate possibility for us?
Ankit Agarwal
Good question. I think we've been talking about this connectivity portfolio for several years.
If you just reflect on how our journey has been, we even acquired a company called Optotec in Italy, we scaled up from there. Then we launched some products, particularly for the US market, like CONCAT and others recently.
Most recently, then we started working with the hyperscalers and data center companies to increase our terminations of the cable and provide the full Neuralis stack. This has been the journey.
Very proud of what we've achieved in a fairly short span. I think some of our global peers have been in this industry for very, very long time.
They are well established manufacturing, they're well established technology, IP, and even the installers and others are very well familiar with their portfolio. This is the work that we are doing.
It's not just about capacity. A lot of it is innovation and co-development with the customer, building things that are customized for their future requirements, not necessarily for today.
This is something we're very proud of. This progress that we've made is truly remarkable in a fairly short period of time.
Clearly we see and understand and respect the benchmark of our global peers, and certainly we would also like to improve our attach rate quarter-on-quarter. As you can appreciate, a lot of this takes time because it involves a lot of product development and co-development, and at some level, we have to bet on some future technologies.
That's where we talked about 2% of our R&D, which as you can imagine, year-on-year will start becoming quite meaningful. That's how we're focused, and look forward to scaling this up with really next-generation technologies coming up.
Operator
Thank you, sir. The next question comes from the line of Gopal Krishna with Motilal Oswal.
Please go ahead.
Gopal Krishna
Hi, sir. Congratulations on a strong results and order book.
My question here is given the recent delays in US in global AI and data center projects, do we see any risk to the delivery timelines of our 35,274 crore order book, or customer proceeding that plan?
Ankit Agarwal
Thank you. Look, there's three, four things, right?
One is broadly I think we're obviously watching the interest rates. We're looking at the balance sheets and what is the cash position of some of the hyperscalers.
Also, we have to be mindful that there are some local execution challenges around land, power, water, and other local opposition. I think at a macro level, the investment plans continue to grow and scale up, but there will be execution challenges from time to time.
The customers, hyperscalers, are also looking to diversify both across the US, but also in geographies like the Nordics, of course, in India we're seeing an expansion, Australia, Mongolia. I think data center companies are also looking to diversify, again with that same ambition of being able to rapidly scale up.
I think the macros continue to be the same. There is genuinely a race for adding capacity, and with our customers, a good portion of our conversations are around how can we help them and innovate with them to help them speed up their installation, make it error-free and first time right.
We haven't seen any changes in our conversations, but really it's a unique opportunity for us, and again as an Indian company to be out there working with them and solving some of their execution timelines.
Operator
Thank you, sir. The next question comes from the line of Sunny Gosar with MK Ventures.
Please go ahead.
Sunny Gosar
Hi. Thanks for taking my question and congratulations on a strong performance.
My question is more on the medium to longer term, and in continuation with one question asked by the earlier participant as well. Historically, we have seen optic fiber go through cycles and there are lots of variations in pricing environment, demand-supply, and this cycle seems to be, at least for now, slightly longer with better visibility.
How are we thinking about our business from more FY '29 and beyond perspective? Are we looking at new areas to diversify the business into something that like lots of global peers are doing different things with glass technology?
How are we generally thinking about diversification or is there anything on the horizon broadly?
Ankit Agarwal
Look, Sunny, at a simple level, first in the near term, we're doing everything to secure and make sure that we are stable in terms of our performance, which is looking at long-term contracts with Tier 1 customers on the telco and data center side. That's something we'll continue to focus on.
Second is, I would say, a pretty significant focus on R&D, and this is a big focus for us building the right team and product portfolio, making some strong bets of where the connectivity will move, along with the latest stacks of where NVIDIA and everything is growing. Then I think the third part is really making sure that our balance sheet is healthy.
We have a strong net cash position to make sure that we're able to sustain the future. I think, coming to your question of more longer term, we have, as you can imagine, over the last 3, 4 years been through a certain phase where we've actually significantly reduced our focus from non-core areas where we were looking at wireless and various other things.
Very happy that from a focus that we've brought into the cable and connectivity and now into data centers, it's been a very focused effort of our team and our technology efforts to get to here. Having said that, certainly we do see that there seems to be strong tailwinds into the future.
We have very, very strong technology, glass technology, I would say, amongst the best in the world. We'll continue to evaluate over a longer period how we can utilize these glass technologies.
I would still say that in the kind of short term to medium term, we're very much going to be damn good at what we do, and the ambition to be top five in the world in where we are requires a lot of focus, just being very, very close to the customers and building some really next-generation technologies for them.
Operator
Thank you, sir. Ladies and gentlemen, that was the last question for today.
I now hand the conference over to the management for closing comments.
Rahul Darak
Thank you, everyone, for taking time to hear us today. We truly believe STL is well positioned to play a pivotal role in building digital infrastructure for the future.
We remain available to take any of your follow-up questions. You may reach out to us at our official email ID, [email protected].
Once again, thank you. We remain grateful for your continued support.
Ankit Agarwal
Thank you.
Ajay Jhanjhari
Thank you.
Operator
Thank you, sir. On behalf of Sterlite Technologies Limited, that concludes this conference.
Thank you for joining us, and you may now disconnect your lines. Thank you.
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