Hedge Fund Millennium Puts Up an Uncharacteristic Loss in February

Millennium Management experienced a rare monthly loss in February 2025, posting a decline of 1.3% that marked the firm's worst monthly performance in over six years. According to people familiar with the matter, this underperformance stands as uncharacteristic for the multi-strategy hedge fund, which typically maintains more resilient monthly returns relative to the broader hedge fund industry.

The losses centered on approximately $900 million in drawdowns distributed across two teams at the firm. Industry sources attributed the decline primarily to index rebalancing trades that went unfavorably, compounded by broader market volatility during the month. The February selloff in artificial intelligence stocks also pressured Millennium's equity-focused portfolios, reflecting sector-wide challenges that affected other top-tier hedge fund managers.

While the 1.3% monthly loss remains modest in absolute terms and relative to underperformance seen at other hedge funds during the same period, it represents a notable departure from Millennium's historical performance profile. The firm, which manages approximately $60 billion across multiple strategies and trading teams, has built its reputation on consistent, lower-volatility returns through diversified market approaches.

The February setback occurred amid broader market challenges that impacted multiple elite hedge fund managers. Citadel and other top-performing funds similarly posted lackluster returns during the month, suggesting that systematic market dislocations—particularly around index rebalancing and momentum reversals in key growth sectors—created headwinds across the industry. For Millennium, the concentration of losses within two specific teams suggests the drawdown was not uniformly distributed across the fund's broader portfolio.