The common thread tying these top performers together was not a single stock but a thematic conviction on the physical layer of AI. Their winning bets fell into three main categories:
While triple-digit returns are extraordinary, these funds were riding the vanguard of a much broader, record-breaking shift by institutional investors.
In April 2026, stock-picking hedge funds surged approximately 6.5%, their strongest monthly performance since at least 1999, while tech-focused hedge funds gained 10.3% . This performance was not limited to one region. Major U.S. multi-strategy firms like Steve Cohen's Point72, Whale Rock Capital Management, and Seligman Investments posted some of their best monthly returns in history from the same semiconductor and AI infrastructure bets
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The foundation for these gains was a radical portfolio restructuring. Goldman Sachs' Q2 2026 Hedge Fund Trend Monitor, which analyzed 1,059 funds managing $4.6 trillion in gross equity positions, revealed an unprecedented concentration :
The one-sided nature of the trade was further confirmed by Bank of America's May Global Fund Manager Survey, which saw "long global semiconductors" named the number one most crowded trade by 73% of respondents—a staggering 49-percentage-point jump in a single month .
Amid the euphoria, late-cycle signals have begun to emerge. By late May 2026, Goldman Sachs Prime Services noted that despite the rally to record highs, some hedge fund clients had started taking profits on semiconductor and equipment makers. The firm characterized this as profit-taking rather than a fundamental shift away from the AI theme, but it occurred against a backdrop of record-high stock prices and elevated inflation data . This tension between historic positioning and incipient risk reduction will likely define the trade in the second half of the year.