BlackRock Launches First Leveraged Loan Index ETF, Targeting $1.4T Market
Event summary
- BlackRock launched the iShares Broad USD Floating Rate Loan ETF (USLN) on March 4, 2026, its first index-based ETF for U.S. dollar-denominated leveraged loans.
- The ETF tracks the Morningstar LSTA US Leveraged Loan Broad Select Index and has a net expense ratio of 0.40%.
- BlackRock manages over $40 billion in leveraged loans globally and $5.7 trillion in total AUM.
- The U.S. leveraged loan market has grown to $1.4 trillion, matching the size of the high-yield bond market.
The big picture
BlackRock's launch of USLN reflects the growing institutionalization of the leveraged loan market, which has expanded to rival high-yield bonds in size. The move underscores demand for scalable, index-based access to credit markets traditionally dominated by active managers. With $5.7 trillion in AUM, BlackRock is leveraging its scale to redefine fixed-income investing, potentially reshaping portfolio construction strategies.
What we're watching
- Market Demand
- Whether retail and institutional investors will adopt the new ETF at scale, given the historically opaque nature of leveraged loans.
- Competitive Response
- How rival asset managers like Vanguard or State Street will react to BlackRock's move into index-based leveraged loan ETFs.
- Performance Tracking
- The pace at which USLN's returns diverge from traditional high-yield bond ETFs, given its focus on senior secured loans.
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