Key Takeaways
- • Global fundamental long-short hedge funds lost money every trading day through October 15, ending the week down 2.9% as a broad unwind of AI trades swept through equity books, per Goldman Sachs prime brokerage data reported by Reuters and The Economic Times.
- • Asia-focused stock pickers fell 6.8% in the first half of October, erasing more than half of gains built since a late-June peak when they were up more than 40% year to date, according to Goldman citing Reuters.
- • Hedge funds net sold Goldman's Global AI Basket of roughly 100 semiconductor, data-center, cloud and power names for five straight sessions from October 8 to 14, reversing net buying since early last year, with proceeds rotated into healthcare and consumer staples.
- • Fundamental long-short, systematic and multi-strategy books have breached an 80 basis point single-day drawdown three times in 2026 (February 4, July 28 and October 15), a frequency Goldman said had not occurred from Covid through the end of 2025.
- • The strategy remains up 14.3% year to date, but the speed of the reversal has renewed concern about crowding across the industry.
Summary
Global fundamental long-short hedge funds lost money on every trading day of the week to October 15, ending the period down 2.9% as a broad unwind of artificial-intelligence trades swept through equity books, according to Goldman Sachs prime brokerage data reported by Reuters and The Economic Times. Despite the decline, the strategy remains up 14.3% for the year to date, though the speed of the reversal has put crowding back at the center of risk discussions.
Asia-focused managers absorbed the heaviest losses. In one session during the week, Asia-focused stock pickers fell 2.6% and technology-focused funds fell 2.0%, while global stock pickers lost 0.9% and systematic long-short and multi-strategy funds each declined roughly 1%. Asia-focused stock pickers were down 6.8% for the first half of October, according to Goldman as reported by Reuters, erasing more than half the gains accumulated since a late-June peak when they were up more than 40% for the year. South Korea's KOSPI fell more than 7% on October 15, per Yonhap, and Taiwanese equities dropped more than 3%. Goldman said the selling was dominated by long liquidation rather than new short positions.
A Goldman Prime Insights report cited by Yonhap Infomax said hedge funds net sold the bank's Global AI Basket, comprising roughly 100 semiconductor, data-center, cloud and power names, for five straight sessions from October 8 to 14. This reversed net buying accumulated since early last year, with proceeds rotated into healthcare and consumer staples. By Friday, Goldman told clients AI stocks had been net sold for six consecutive sessions, according to Reuters.
Allocators should note the breadth of the drawdown. Goldman said that from Covid through the end of 2025, fundamental equity long-short, systematic and multi-strategy books never fell more than 80 basis points on the same day. That threshold has now been breached three times in 2026, on February 4, July 28 and October 15. Bruno Schneller of Erlen Capital Management told Reuters: "The interesting thing about this selloff is that it exposes just how much of the hedge fund industry has effectively been trading the same underlying theme, even when portfolios look very different on paper."
The macro trigger was a hotter-than-expected U.S. inflation reading that revived expectations of further rate increases and hit the most capital-intensive parts of the AI complex. For investors in multi-manager and long-short funds, the episode underscores the need to look through strategy labels to factor and theme exposure, and to ask managers how much gross exposure they cut this month and at what cost.
Asia-focused managers absorbed the heaviest losses. In one session during the week, Asia-focused stock pickers fell 2.6% and technology-focused funds fell 2.0%, while global stock pickers lost 0.9% and systematic long-short and multi-strategy funds each declined roughly 1%. Asia-focused stock pickers were down 6.8% for the first half of October, according to Goldman as reported by Reuters, erasing more than half the gains accumulated since a late-June peak when they were up more than 40% for the year. South Korea's KOSPI fell more than 7% on October 15, per Yonhap, and Taiwanese equities dropped more than 3%. Goldman said the selling was dominated by long liquidation rather than new short positions.
A Goldman Prime Insights report cited by Yonhap Infomax said hedge funds net sold the bank's Global AI Basket, comprising roughly 100 semiconductor, data-center, cloud and power names, for five straight sessions from October 8 to 14. This reversed net buying accumulated since early last year, with proceeds rotated into healthcare and consumer staples. By Friday, Goldman told clients AI stocks had been net sold for six consecutive sessions, according to Reuters.
Allocators should note the breadth of the drawdown. Goldman said that from Covid through the end of 2025, fundamental equity long-short, systematic and multi-strategy books never fell more than 80 basis points on the same day. That threshold has now been breached three times in 2026, on February 4, July 28 and October 15. Bruno Schneller of Erlen Capital Management told Reuters: "The interesting thing about this selloff is that it exposes just how much of the hedge fund industry has effectively been trading the same underlying theme, even when portfolios look very different on paper."
The macro trigger was a hotter-than-expected U.S. inflation reading that revived expectations of further rate increases and hit the most capital-intensive parts of the AI complex. For investors in multi-manager and long-short funds, the episode underscores the need to look through strategy labels to factor and theme exposure, and to ask managers how much gross exposure they cut this month and at what cost.
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