FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) is an exchange-traded fund that seeks investment results corresponding to the price and yield performance, before fees and expenses, of the iBoxx 5-Year Target Duration TIPS Index. The fund provides exposure to a portfolio of U.S. Treasury Inflation-Protected Securities (TIPS) selected and weighted via the index's proprietary methodology to target a modified adjusted duration of approximately 5.0 years, plus or minus 5%, with eligible TIPS having remaining maturities between one and ten years; top holdings typically include various U.S. Treasury TIPS notes such as the 1.625%, 0.125%, and similar coupon securities comprising around 45% of the portfolio in the five largest positions. Launched on September 19, 2011 under the FlexShares Trust, a product suite managed by Northern Trust Investments and headquartered at 50 South LaSalle Street in Chicago, Illinois, TDTF operates in the fixed income segment focused on inflation-protected bonds for institutional and individual investors seeking inflation-hedging with controlled interest rate risk.
In recent developments, FlexShares--parent platform of TDTF--announced in 2025 that it will rebrand to Northern Trust ETFs in 2026, aligning its investment processes, portfolio management, and offerings more closely with Northern Trust Asset Management while maintaining continuity for existing funds like TDTF. Northern Trust Asset Management also launched 11 new fixed income ETFs in August 2025, including distributing ladder and tax-exempt bond index suites, expanding its goals-driven ETF lineup amid assets under management for FlexShares reaching approximately $19.9 billion overall, with TDTF holding around $867-$905 million in AUM. Earlier in 2025, FlexShares announced liquidations of select underperforming funds such as IQDE (January 2025) and others, reflecting portfolio optimization without impacting core offerings like TDTF, alongside ongoing monthly rebalancing of the fund's TIPS holdings. The fund remains passively managed with a net expense ratio of 0.18%, domiciled in the United States, and listed on NYSE Arca.