- Sector
- Financial Services
- Industry
- Asset Management - Bonds
- Address
- 150 North Riverside Plaza Chicago IL 60606
- IPO Date
- Jan 2, 2019
- Business
- William Blair Bond Fund Class N (WBBNX) is an open-end mutual fund managed by William Blair Investment Management, LLC that seeks to outperform the Bloomberg U.S. Aggregate Index by maximizing total return through a combination of income and capital appreciation; under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in investment-grade U.S. dollar-denominated bonds, including government debt securities and corporate debt securities. The fund targets intermediate-term fixed income strategies within the broader bond market segment, serving institutional and retail investors seeking diversified exposure to high-quality debt instruments with a focus on total return. It operates primarily in the United States fixed income market, with assets under management for the Class N shares reported at approximately $7.37 million and an expense ratio of 0.60%.
William Blair & Company, founded in 1935 and headquartered at 150 North Riverside Plaza in Chicago, Illinois, provides the investment advisory services through its independent, employee-owned platform that oversees a range of mutual funds and manages over $38 billion in portfolio assets across global strategies. The firm maintains operations in more than 20 offices worldwide, emphasizing investment management alongside investment banking and private wealth services. WBBNX falls under William Blair's mutual fund lineup, which includes various equity and fixed income offerings available to U.S. investors.
Recent developments at William Blair include significant expansions in its Private Capital Advisory franchise, which raised billions in primary capital ($10 billion) and secondary deal volume ($8-11 billion) across 18 mandates and 10 transactions in 2024, with all continuation funds oversubscribed and strong oversubscription rates. The firm bolstered its buy-side capabilities, secondaries, fund placement, and non-control investments while deepening ties with family offices, venture capital investors, and founder-owned companies amid evolving economic conditions into 2025. Portfolio adjustments by William Blair Investment Management in 2024-2025 featured major new holdings in stocks such as Alphabet (GOOGL, up 592%), Nu Holdings (NU, up 183%), and Broadcom (AVGO), alongside reductions in positions like Datadog (DDOG, -100%), Amazon (AMZN, -18%), and Meta (META, -17%), reflecting active management across strategies. No specific fund closures, launches, or reorganizations were reported for WBBNX itself in the last 1-2 years, though the broader platform continues to adapt to market dynamics.