Key Takeaways
- • Morningstar upgraded the $7.9 billion AQR Long-Short Equity fund (QLEIX) from Bronze to Silver rating, citing meaningful improvements in the fund's investment process pillar that moved from average to above average.
- • AQR implemented a significant strategic overhaul in early 2025, replacing its previous broad-theme risk budgeting approach with a rules-based system that distributes risk across hundreds of smaller groupings using its market-neutral global stock-selection model.
- • The redesigned fund now ranks 2,000 of the most liquid global stocks using value, momentum, and proprietary factors while employing tactical equity management via futures contracts, eliminating the discretionary value tilt used from 2019–2024.
- • QLEIX delivered annualized returns of 19.22% over the past year, outperforming its Long-Short Equity category average of 18.09%, with performance contributions spread across multiple factors rather than concentrated in single themes.
- • AQR is simultaneously soft-closing both the $8 billion AQR Long-Short Equity fund and the $2.9 billion AQR Equity Market Neutral fund to most new investors, reflecting capacity constraints following strong asset inflows.
Summary
Morningstar's analyst team has upgraded the $7.9 billion AQR Long-Short Equity fund (QLEIX) from Bronze to Silver, marking recognition of substantial improvements to the fund's systematic investment approach. According to Morningstar analyst Jodi Lim, the upgrade reflects increased conviction in the fund's process pillar, which demonstrated meaningful enhancements in how AQR translates its research findings into portfolio construction and positioning decisions.
The core driver of this upgrade centers on a fundamental redesign of AQR's portfolio management framework implemented in early 2025. The firm shifted from a discretionary approach anchored on broad thematic risk budgets to a rules-based, data-driven system that distributes risk exposure across hundreds of smaller, more granular factor groupings. The new methodology leverages AQR's market-neutral global stock-selection model to rank approximately 2,000 of the most liquid global equities using established factors—value and momentum—alongside proprietary AQR factors. Tactical positioning in equity exposures is now managed systematically through futures contracts rather than discretionary overlays. Critically, AQR eliminated a discretionary value tilt that had been embedded in the strategy since 2019, replacing it with size-limited, rules-based positioning designed to enhance diversification and promote more stable, repeatable outcomes aligned with systematic investing principles.
In 2025, the fund's performance validated this operational transition. QLEIX generated annualized returns of 19.22%, outperforming its Long-Short Equity peer category average of 18.09%. Notably, performance contributions were diversified across multiple factor themes rather than concentrated in any single factor such as value, demonstrating the framework's intended balanced approach. Lim noted that sustained contribution breadth across varying market environments would further validate the effectiveness of the new systematic architecture.
Parallel to the upgrade announcement, AQR is implementing soft closures on both QLEIX and its $2.9 billion AQR Equity Market Neutral fund to most new investors. This capacity management decision reflects strong asset inflows, with the long-short funds generating $260 million in net flows during the first quarter and $70 million in the second quarter, according to Morningstar Direct data. The fund is managed by portfolio managers Michele L. Aghassi, Clifford S. Asness, and John J., among others.
The core driver of this upgrade centers on a fundamental redesign of AQR's portfolio management framework implemented in early 2025. The firm shifted from a discretionary approach anchored on broad thematic risk budgets to a rules-based, data-driven system that distributes risk exposure across hundreds of smaller, more granular factor groupings. The new methodology leverages AQR's market-neutral global stock-selection model to rank approximately 2,000 of the most liquid global equities using established factors—value and momentum—alongside proprietary AQR factors. Tactical positioning in equity exposures is now managed systematically through futures contracts rather than discretionary overlays. Critically, AQR eliminated a discretionary value tilt that had been embedded in the strategy since 2019, replacing it with size-limited, rules-based positioning designed to enhance diversification and promote more stable, repeatable outcomes aligned with systematic investing principles.
In 2025, the fund's performance validated this operational transition. QLEIX generated annualized returns of 19.22%, outperforming its Long-Short Equity peer category average of 18.09%. Notably, performance contributions were diversified across multiple factor themes rather than concentrated in any single factor such as value, demonstrating the framework's intended balanced approach. Lim noted that sustained contribution breadth across varying market environments would further validate the effectiveness of the new systematic architecture.
Parallel to the upgrade announcement, AQR is implementing soft closures on both QLEIX and its $2.9 billion AQR Equity Market Neutral fund to most new investors. This capacity management decision reflects strong asset inflows, with the long-short funds generating $260 million in net flows during the first quarter and $70 million in the second quarter, according to Morningstar Direct data. The fund is managed by portfolio managers Michele L. Aghassi, Clifford S. Asness, and John J., among others.
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