Key Takeaways
- • Hedge funds significantly increased short positions in AI-related stocks during July 2026, targeting Super Micro Computer, Coreweave, and Nebius Group—all three ranking in the top 10 most-shorted stocks across Hazeltree's 700+ fund client base, with positioning growing from June levels.
- • U.S. chip stocks declined 20% in July while South Korea's Kospi index fell 22%, marking the largest monthly drops for both indexes since 2008, driven by investor concerns over semiconductor valuations and sustainability of revenue growth.
- • Hedge funds reduced long positions and increased short bets on Nvidia in July, though aggregate fund positioning remained long despite the tactical shift toward greater hedging.
- • Coreweave's strong second-quarter earnings beat triggered extended-hours trading gains, creating conditions for a potential short squeeze as high short positioning can amplify upside moves when forced buying occurs.
- • Rather than exiting AI exposure entirely, institutional investors redeployed capital from overvalued AI infrastructure winners toward companies demonstrating clearer monetization pathways, while trimming leveraged semiconductor bets to reduce borrowed risk.
Summary
Hedge funds materially increased short positioning on artificial intelligence-related equities during July 2026, according to a Wednesday report from Hazeltree, a data platform tracking positioning across more than 700 hedge fund clients. The shift reflected broader market turbulence that sent semiconductor shares tumbling globally, with U.S. chip stocks falling 20% and South Korea's tech-heavy Kospi index declining 22%—both marking their worst monthly performances since 2008.
The most heavily targeted stocks for new short positioning included infrastructure plays and chipmakers central to the AI ecosystem. Super Micro Computer, Coreweave, and Nebius Group all appeared in the top 10 most-shorted stocks in Hazeltree's hedge fund universe during July, with each position showing material growth from June levels despite already holding prominent short exposure. Additionally, Nvidia—the sector's flagship chipmaker and largest beneficiary of AI demand—saw hedge funds reduce long positions and increase short bets, though aggregate fund positioning in Nvidia remained net long.
The tactical repositioning reflected deepening skepticism about valuation multiples and the durability of chipmaker revenue growth that had driven substantial gains throughout the first half of 2026. However, the shift was not a wholesale exit from artificial intelligence exposure. According to Hazeltree's analysis, "Wall Street took profits in some of the year's biggest AI infrastructure winners without abandoning the trade altogether, instead redeploying capital into companies that have shown signs of monetisation. A similar unwind played out in leveraged semiconductor bets, with investors trimming borrowed risk rather than exiting AI exposure entirely."
Coreweave's strong second-quarter earnings beat provided a notable catalyst in extended trading on August 11, with share price strength potentially setting up conditions for a short squeeze—the forced buying pressure that occurs when investors holding short positions cover losses as prices rise. The divergence between heavily shorted infrastructure stocks and those demonstrating viable revenue models suggests hedge funds are executing a selective rotation rather than a generalized retreat from the artificial intelligence sector.
The most heavily targeted stocks for new short positioning included infrastructure plays and chipmakers central to the AI ecosystem. Super Micro Computer, Coreweave, and Nebius Group all appeared in the top 10 most-shorted stocks in Hazeltree's hedge fund universe during July, with each position showing material growth from June levels despite already holding prominent short exposure. Additionally, Nvidia—the sector's flagship chipmaker and largest beneficiary of AI demand—saw hedge funds reduce long positions and increase short bets, though aggregate fund positioning in Nvidia remained net long.
The tactical repositioning reflected deepening skepticism about valuation multiples and the durability of chipmaker revenue growth that had driven substantial gains throughout the first half of 2026. However, the shift was not a wholesale exit from artificial intelligence exposure. According to Hazeltree's analysis, "Wall Street took profits in some of the year's biggest AI infrastructure winners without abandoning the trade altogether, instead redeploying capital into companies that have shown signs of monetisation. A similar unwind played out in leveraged semiconductor bets, with investors trimming borrowed risk rather than exiting AI exposure entirely."
Coreweave's strong second-quarter earnings beat provided a notable catalyst in extended trading on August 11, with share price strength potentially setting up conditions for a short squeeze—the forced buying pressure that occurs when investors holding short positions cover losses as prices rise. The divergence between heavily shorted infrastructure stocks and those demonstrating viable revenue models suggests hedge funds are executing a selective rotation rather than a generalized retreat from the artificial intelligence sector.
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