Key Takeaways
- • Lone Pine Capital lost roughly 9% in October 2026 as concerns over AI investments roiled markets, erasing much of a 44% year-to-date gain, according to a person familiar with the matter cited by Bloomberg.
- • Lone Pine is now down about 7% for 2026, placing it among the worst performers in its peer group.
- • Tiger Global Management and Whale Rock Capital Management were also among stock-picking hedge funds hit hard during the October selloff.
- • The episode highlights the concentration risk of equity-focused hedge funds exposed to AI-linked valuations.
Summary
Stock-picking hedge funds including Lone Pine Capital, Tiger Global Management and Whale Rock Capital Management were among the heaviest losers last month as concerns over investments tied to artificial intelligence roiled markets, according to Bloomberg.
Lone Pine, the hedge fund led by Steve Mandel, suffered a roughly 9% loss in October. The decline erased a 44% gain the fund had already built earlier in 2026. According to a person familiar with the matter, who was not named because the returns are confidential, Lone Pine is now down about 7% for the year, one of the weakest performances in its peer group.
The article does not provide comparable October loss figures for Tiger Global or Whale Rock. Their inclusion alongside Lone Pine underscores how broadly the AI-related selloff affected fundamentally oriented equity managers, many of which had leaned into the same large-cap technology and AI-exposed names that drove market gains earlier in the year.
The episode is a reminder for allocators of the drawdown risk embedded in concentrated long/short equity strategies when a single theme dominates market leadership. For institutional investors reassessing hedge fund exposure, the October performance of these managers will be a key data point in evaluating manager risk controls and the durability of year-to-date returns.
Lone Pine, the hedge fund led by Steve Mandel, suffered a roughly 9% loss in October. The decline erased a 44% gain the fund had already built earlier in 2026. According to a person familiar with the matter, who was not named because the returns are confidential, Lone Pine is now down about 7% for the year, one of the weakest performances in its peer group.
The article does not provide comparable October loss figures for Tiger Global or Whale Rock. Their inclusion alongside Lone Pine underscores how broadly the AI-related selloff affected fundamentally oriented equity managers, many of which had leaned into the same large-cap technology and AI-exposed names that drove market gains earlier in the year.
The episode is a reminder for allocators of the drawdown risk embedded in concentrated long/short equity strategies when a single theme dominates market leadership. For institutional investors reassessing hedge fund exposure, the October performance of these managers will be a key data point in evaluating manager risk controls and the durability of year-to-date returns.
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