AQR is a large investment management firm that uses quantitative, research-driven strategies to manage money for institutional and individual investors. Founded in 1998 by Cliff Asness, David Kabiller, Robert Krail, and John Liew, AQR Capital Management is headquartered in Greenwich, Connecticut, and manages approximately $189 billion in assets. The name stands for Applied Quantitative Research, which captures the firm’s core identity: applying academic financial research to real-world investing.
How AQR Invests
AQR is best known for systematic, factor-based investing. Instead of relying on a portfolio manager’s gut feeling about which stocks to buy, the firm builds strategies around quantifiable traits that academic research has linked to long-term returns. These traits are called “factors” or “styles,” and AQR’s models use them to make disciplined, rules-based decisions across thousands of securities at once.
The three factors AQR emphasizes most are value, momentum, and quality. Value strategies buy stocks that look cheap relative to fundamentals like earnings or book value, betting that prices will eventually reflect what the companies are actually worth. Momentum strategies do the opposite of bargain hunting: they invest in stocks that have been rising, based on evidence that winning streaks tend to continue in the short to medium term. Quality strategies favor companies with strong profitability, stable earnings, and healthy balance sheets.
What makes AQR distinctive is how it combines these factors. A multi-factor approach blends value, momentum, and quality signals into a single portfolio, so when one style is out of favor, another may pick up the slack. The firm applies these ideas not just to stocks but across asset classes, including bonds, currencies, and commodities. This breadth is a core part of the strategy: diversifying across both factors and markets to produce more consistent results over time.
What AQR Offers Investors
AQR runs a range of investment products that span the risk and accessibility spectrum. On one end, the firm manages private hedge fund strategies available only to large institutional investors and high-net-worth individuals. These include alternative strategies like trend following (betting on the direction of price trends across global markets) and long-short equity (buying undervalued stocks while betting against overvalued ones).
On the more accessible end, AQR offers U.S. mutual funds that individual investors can buy through standard brokerage accounts. The firm also runs UCITS funds, which are regulated investment vehicles available to investors in Europe and other international markets, as well as funds for Australian investors. Its product lineup covers equities, alternatives, and tax-aware strategies designed to minimize the drag of capital gains taxes on returns.
Recent Performance
AQR has been on a strong run. In 2025, the firm posted double-digit returns across its funds, according to Reuters. Its multi-strategy Apex fund gained 19.6%, its trend-following Helix strategy returned 18.6%, and its Delphi Long-Short Equity strategy delivered 16.8%, all net of fees. For context, an index tracking systematic trend-following hedge funds returned just over 2.5% that same year, per Societe Generale’s indices. That gap illustrates how much performance can vary even among firms using broadly similar quantitative approaches.
This wasn’t a one-year fluke. AQR weathered a difficult stretch in the late 2010s when value investing, one of its core strategies, underperformed growth stocks for an unusually long period. The firm shed assets and faced skepticism about whether its approach still worked. The reversal since then, as value and other factors regained traction, has been one of the more notable comeback stories in the hedge fund world.
Who Uses AQR
AQR’s primary clients are institutional investors: pension funds, endowments, sovereign wealth funds, and foundations that allocate large pools of capital across different strategies. These institutions are drawn to AQR’s systematic approach because it is transparent about what drives returns. Rather than trusting a star manager’s instincts, they can evaluate the firm’s process by examining the academic evidence behind each factor.
Individual investors interact with AQR mainly through its mutual fund lineup. These funds give retail investors access to the same factor-based strategies the firm uses in its institutional portfolios, though typically in simpler, long-only formats (meaning they buy securities without betting against them). The minimum investments and fee structures for these funds vary, but they are broadly accessible through major brokerage platforms.
AQR’s Role in the Investment World
Beyond managing money, AQR has had an outsized influence on how the broader investment industry thinks about returns. Cliff Asness, the firm’s co-founder and chief investment officer, is one of the most prominent voices in quantitative finance. He studied under Nobel laureate Eugene Fama at the University of Chicago, and the firm regularly publishes research that challenges conventional investing wisdom.
AQR’s research team produces white papers and journal articles on topics like whether active managers actually add value, how to think about risk, and why investors systematically overpay for certain types of assets. Much of this research is freely available on the firm’s website, making AQR both an asset manager and a de facto research institution. For investors trying to understand concepts like factor investing, smart beta, or alternative risk premia, AQR’s published work is often the starting point.