Key Takeaways
- • Rokos Capital Management declined 1.2% in July, reducing its 2026 year-to-date return to 8.1%, while Brevan Howard's Master fund fell approximately 1.2%, leaving it up 0.9% for the year, as AI stock volatility disrupted hedge fund strategies across the industry.
- • Said Haidar's Jupiter fund suffered steeper losses of 3.2% in July, resulting in a year-to-date loss of approximately 13%, underscoring the varied impact of the market selloff on different managers.
- • D.E. Shaw demonstrated relative resilience, with its Oculus fund gaining 0.9% in July to reach a 2026 return of 27.7%, while its Composite fund added 0.4% for a year-to-date gain of 13.9%, outperforming peers during the turbulent period.
- • The July downturn was triggered by investor concerns over unsustainable capital spending commitments in artificial intelligence, including Nvidia's announcement of more than $750 billion in new AI-related deals, alongside competitive pressures from a Chinese AI developer advancement.
- • Situational Awareness, an AI-focused hedge fund, collapsed 67% in July and was forced to liquidate most of its public-equity portfolio to Citadel to cover margin calls, intensifying market turmoil and exposing crowded positions across the hedge fund industry.
Summary
Rokos Capital Management and Brevan Howard Asset Management were among prominent hedge funds that posted losses in July 2026, as sharp volatility in artificial intelligence stocks disrupted strategies across the industry. According to Bloomberg, Rokos declined 1.2% during the month, bringing its year-to-date return to 8.1%, while Brevan Howard's Master fund fell approximately 1.2%, leaving it up just 0.9% for the year. Said Haidar's Jupiter fund experienced more pronounced losses, falling an estimated 3.2% in July and taking its year-to-date performance into negative territory at approximately negative 13%.
The July selloff represents a sharp reversal following what had been the strongest first half in five years for the hedge fund industry. The turnaround was driven by sudden shifts in AI-related equities, which exposed crowded positions and triggered significant market swings. Investor concerns centered on the sustainability of capital spending commitments underpinning the AI boom, particularly after Nvidia announced more than $750 billion in new AI-related deals. An unexpected advancement by a Chinese AI developer added to competitive landscape concerns and further pressured technology-focused strategies.
D.E. Shaw navigated the July turbulence more successfully than peers. The firm's Oculus fund gained 0.9% in July, bringing its 2026 return to 27.7%, while its Composite fund added 0.4% for a year-to-date gain of 13.9%, demonstrating outperformance during the volatile period. The broader market deterioration was intensified by the collapse of Situational Awareness, an AI-focused hedge fund that plunged 67% in July and was forced to sell most of its public-equity portfolio to Citadel to meet margin call obligations.
The volatility extended beyond technology-focused managers. Macro firms—traditionally associated with trading currencies, interest rates, and other asset classes—have increasingly deployed capital into equities, leaving them more exposed to sharp equity market movements. This shift in allocation strategy among diversified managers amplified the market impact of July's AI-related selloff.
The July selloff represents a sharp reversal following what had been the strongest first half in five years for the hedge fund industry. The turnaround was driven by sudden shifts in AI-related equities, which exposed crowded positions and triggered significant market swings. Investor concerns centered on the sustainability of capital spending commitments underpinning the AI boom, particularly after Nvidia announced more than $750 billion in new AI-related deals. An unexpected advancement by a Chinese AI developer added to competitive landscape concerns and further pressured technology-focused strategies.
D.E. Shaw navigated the July turbulence more successfully than peers. The firm's Oculus fund gained 0.9% in July, bringing its 2026 return to 27.7%, while its Composite fund added 0.4% for a year-to-date gain of 13.9%, demonstrating outperformance during the volatile period. The broader market deterioration was intensified by the collapse of Situational Awareness, an AI-focused hedge fund that plunged 67% in July and was forced to sell most of its public-equity portfolio to Citadel to meet margin call obligations.
The volatility extended beyond technology-focused managers. Macro firms—traditionally associated with trading currencies, interest rates, and other asset classes—have increasingly deployed capital into equities, leaving them more exposed to sharp equity market movements. This shift in allocation strategy among diversified managers amplified the market impact of July's AI-related selloff.
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