A sudden pullback in artificial intelligence stocks is hitting quantitative hedge funds hard, giving them their worst run since last August. According to a note from Goldman Sachs, systematic managers—funds that use computer algorithms to follow market trends and manage risk—have surrendered roughly a quarter of their gains for the year.
The pain is concentrated in US equities and developed Asian markets, with smaller losses in Europe. The trigger: sharp swings in semiconductor stocks, which had been the darlings of the AI trade. As those crowded positions reversed, leverage among these funds dropped to its lowest level in a year.
What Are Systematic Managers?
Systematic managers, also known as quant funds, rely on mathematical models and algorithms to make trading decisions. They often follow momentum—buying assets that are rising and selling those that are falling—and adjust their exposure based on volatility. When markets are calm and trends are clear, these funds tend to perform well. But when volatility spikes and trends reverse suddenly, they can get caught offside.
Goldman Sachs estimates that these funds are still up 10.8% for the year, but that is down from 14.4% on June 22. The recent drawdown has erased a significant chunk of the profits built up during the first half of the year, which was the best first half for hedge funds overall since 2013, led by stockpickers.
Why the AI Trade Unwound
The AI rally had been one of the dominant themes of 2024, with chipmakers and other tech stocks soaring on optimism about artificial intelligence. But in late June and early July, that enthusiasm cooled. A combination of profit-taking, regulatory concerns, and shifting investor sentiment triggered a sell-off in the very stocks that had led the market higher.
For quant funds that had piled into those trades, the reversal was painful. As prices fell, their models likely forced them to cut positions and reduce leverage, amplifying the downturn. This kind of forced selling can create a feedback loop, pushing prices lower and triggering further deleveraging.
What It Means for Everyday Investors
For ordinary investors, the struggles of quant funds are a reminder that even sophisticated strategies can stumble when markets shift. The AI trade was a classic momentum play—everyone wanted in, and when it turned, everyone wanted out. That kind of crowding can lead to sharp reversals.
It also highlights the importance of diversification. While AI stocks have been a huge winner, putting all your eggs in one basket—especially a crowded one—can lead to big losses when the tide turns. The broader market may also feel the ripple effects, as quant funds are large players whose moves can influence prices across sectors.
Investors should watch for further deleveraging, which could add to volatility in the weeks ahead. On the positive side, the pullback may create opportunities for those with a longer time horizon, as AI remains a transformative technology with strong fundamentals.
Looking Ahead
Goldman Sachs did not predict how long the pain would last, but the note suggests that the unwind may not be over. Leverage is at a one-year low, which could mean that the worst of the selling is behind us—or that more is to come if volatility persists.
For now, the key question is whether the AI trade will regain its footing or if the correction has further to run. Either way, the episode is a vivid illustration of how quickly market sentiment can change, and how even the smartest algorithms can get caught off guard.
