The semiconductor trade that has dominated equity markets this year has entered a far more volatile phase, forcing hedge funds and institutional investors to reassess one of the market’s most crowded AI-driven themes, according to a report by Bloomberg.
The Philadelphia Semiconductor Index (SOX) fell 21% in July, its worst monthly performance since the depths of the 2008 financial crisis, as concerns over the sustainability of artificial intelligence spending triggered sharp swings across chip stocks.
Volatility surged throughout the month, with the index recording intraday moves of at least 2% during every trading session and daily gains or losses exceeding 4% on nearly half of those days. The extreme price action reflects growing uncertainty over whether the rapid expansion in AI infrastructure investment can continue at its current pace.
For hedge funds, the reversal has exposed the risks of concentrated positioning in one of the year’s strongest-performing sectors. The sell-off contributed to the collapse of AI-focused hedge fund Situational Awareness, which was forced to liquidate billions of dollars of technology holdings after suffering margin calls linked to falling share prices.
The fund had amassed sizeable positions in companies benefiting from the AI boom, including memory chipmaker Sandisk, whose shares plunged after an extraordinary rally during the first half of the year.
The broader correction has prompted investors to question whether semiconductor stocks can continue to lead global equity markets. Growing competition, the emergence of increasingly efficient open-source AI models and closer scrutiny of Big Tech capital expenditure plans have all raised concerns that demand for advanced chips could moderate over time.
Despite those concerns, many analysts remain constructive on the sector’s near-term earnings outlook. Technology giants including Amazon and Microsoft have reaffirmed plans to invest hundreds of billions of dollars in AI infrastructure over the coming year, providing continued support for manufacturers of high-performance chips used in data centres.
However, longer-term questions remain around profitability. Semiconductor companies have historically been highly cyclical, and some investors believe today’s elevated margins may prove difficult to sustain once AI-related demand begins to normalise.
The market correction has also highlighted divergent investor behaviour. While many hedge funds reduced exposure or de-risked positions, retail investors aggressively bought the dip, directing a record $12bn into semiconductor-focused exchange-traded funds during the final week of July, according to Bloomberg Intelligence.
Even after a late-month rebound, the semiconductor index remains well below its June peak, with more than half of its constituent stocks still down at least 25% from recent highs.
For hedge funds, the AI investment theme remains intact, but July’s dramatic reversal demonstrates that positioning, leverage and valuation are becoming increasingly important as markets shift from momentum-driven buying to greater scrutiny of earnings quality and the long-term economics of artificial intelligence.
