Active Management in Focus: MUSI as an Alternative to Traditional Bond ETFs
Tue Apr 28 2026
The American Century Multisector Income ETF (MUSI) is presented as an alternative to traditional aggregate bond funds, offering active management in the fixed income space.
According to ETFTrends, the recent frustration experienced by bond investors during the first quarter may prompt advisors and fixed income investors to consider alternatives to conventional passive aggregate bond funds. The article highlights MUSI, the American Century Multisector Income ETF, as a potential solution, emphasizing its actively managed approach as a differentiating factor in the bond ETF landscape.
What Happened
The first quarter of the year proved challenging for bond investors, leading to subpar returns across the board. This broad underperformance in fixed income markets has sparked discussions among investors and financial advisors about the efficacy and appeal of traditional passive aggregate bond strategies. In response to this sentiment, ETFTrends points to the actively managed MUSI ETF, which is approaching its five-year anniversary, as an option for those seeking a more dynamic approach to fixed income.
Why It Matters for ETF Investors
For ETF investors, the underperformance of traditional aggregate bond funds like AGG can underscore the limitations of purely passive strategies in certain market conditions. While passive funds offer low costs and broad market exposure, they are beholden to their underlying indices. Active bond ETFs, such as MUSI, aim to navigate challenging markets by employing professional managers who can adapt portfolios based on their outlook on interest rates, credit quality, and other market factors. This adaptability can be particularly appealing when the broader bond market faces headwinds, potentially offering a different risk/reward profile than a purely indexed approach. Investors utilizing core-satellite strategies may find an actively managed fixed income component beneficial for seeking alpha or mitigating duration risk.
Affected ETFs
MUSI (American Century Multisector Income ETF): This ETF is directly highlighted as an actively managed alternative. Its multisector approach and active management differentiate it from passive counterparts.
AGG (iShares Core U.S. Aggregate Bond ETF): Representing a traditional passive aggregate bond fund, AGG serves as the benchmark against which actively managed alternatives like MUSI are often compared. Its performance in challenging quarters can drive investors to seek other options.
Sector / Classification Impact
The discussion primarily impacts the bond asset class, particularly within the "Broad Market, Broad-based" category. The distinction between "Vanilla" (passive) and "Active" strategies is central to the article's premise. The underperformance of general bond markets emphasizes the potential value of active strategies which allow managers to dynamically adjust holdings across various bond types, sectors, and credit qualities in an effort to outperform or manage risk more effectively than an index-tracking fund. This further highlights the evolution of product offerings within the fixed income ETF space.
Bottom Line
The challenging fixed income environment in the first quarter has brought active management in bond ETFs into sharper focus. Funds like MUSI offer investors an actively managed alternative to traditional passive aggregate bond strategies, providing potential for tactical positioning and different outcomes during periods of market stress. This discussion underscores the ongoing debate within the ETF community about the optimal blend of passive and active strategies, particularly in asset classes like fixed income where market conditions can shift rapidly.
Source: ETFTrends — https://www.etftrends.com/core-strategies-content-hub/take-fresh-approach-agg-with-bond-etf/
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Source: https://www.etftrends.com/core-strategies-content-hub/take-fresh-approach-agg-with-bond-etf/