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Shifting Paradigms for Portfolio Construction in 2026

Reported by Am
Nov 18, 2025· 3 min read
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Key Takeaways
  • • Active ETF growth accelerates: Global assets under management in active ETFs have grown 46% annually since 2020, driven by investor demand for flexible, actively managed solutions across multiple asset classes.
  • • Fixed income dominance in active ETF flows: Active fixed income ETFs now capture 41% of total inflows to US-listed fixed income ETFs, reflecting strong institutional appetite for dynamic security selection in structurally inefficient markets.
  • • 2026 fixed income outlook favors active management: Expected central bank rate cuts in the US and globally position fixed income for gains, with attractive opportunities in high-yield, emerging market debt, investment-grade credit, and front-end US Treasuries—areas where active ETF liquidity and bottom-up selection add value.
  • • Portfolio construction paradigm shifting: The investment landscape in 2026 demands recalibration toward diversified building blocks, including private markets, credit dispersion strategies, and alternative investments, moving away from traditional index-heavy allocations.
  • • Active ETFs expand beyond equities: Growth opportunities extend to private assets and derivative-income ETF products, positioning active ETFs as structural solutions for accessing markets with inefficiencies requiring robust risk management.
Summary
Portfolio construction is undergoing fundamental recalibration heading into 2026, with active exchange-traded funds emerging as a preferred vehicle for institutional investors seeking exposure to multiple asset classes. According to Goldman Sachs analysis, global assets under management in active ETFs have grown at a 46% annual rate since the beginning of 2020, reflecting sustained institutional demand for actively managed structures that combine transparency and liquidity with security selection capabilities.

The fixed income market represents the primary growth engine for active ETFs in the year ahead. Active fixed income ETFs now account for 41% of total inflows to US-listed fixed income ETFs, demonstrating institutional conviction in active management's ability to navigate structural market inefficiencies. The fixed income opportunity set appears particularly compelling from both technical and fundamental perspectives. Expected central bank rate cuts across the US and other major economies should benefit multiple fixed income segments, including investment-grade corporate credit and shorter-duration US Treasury positions. The structural case for active management strengthens in harder-to-access market segments, particularly high-yield debt and emerging market sovereign and corporate obligations, where security selection and credit analysis prove essential to risk-adjusted returns.

Beyond fixed income, portfolio construction in 2026 is diversifying across alternative investment strategies, private markets, and derivative-income products. The shift reflects a broader institutional recognition that concentrated equity markets and shifting interest-rate dynamics require differentiated sources of return and enhanced diversification. Model portfolios are evolving away from predominantly index-based and mutual fund allocations toward more customized building blocks, including separately managed accounts and specialized strategies targeting credit dispersion and artificial intelligence-driven opportunities.

Active ETFs' structural advantages—particularly liquidity, transparency, and regulatory efficiency—enable investors to manage dynamic portfolio positioning across these expanded opportunity sets. The combination of active management capability with ETF infrastructure appears well-positioned to capture continued institutional demand as investors navigate the multi-asset, multi-factor investment environment anticipated for 2026.

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Am Shifting Paradigms for Portfolio Construction in 2026