Key Takeaways
- • Hedge funds increased short positioning across major US technology names in October 2026, with the number of short holders rising for Amazon, Apple, Nvidia and Meta, according to Data Insights' October 2026 Crowding Report.
- • Apple's long-to-short fund count ratio fell to 0.65, its lowest level this year, while Meta, Amazon and Microsoft also recorded annual lows in the same metric.
- • AMD flipped from a long bias to a short bias, with its long-to-short ratio falling from 1.18 to 0.94 and net long exposure dropping from 77.9% to 44.4%.
- • CoreWeave shares fell roughly 37% in October amid credit concerns, and its 2032 bonds yielded close to 15%, underscoring investor unease over AI infrastructure financing.
- • The report, covering about 16,000 securities across more than 700 hedge funds, highlights a divergence: the Nasdaq Composite fell roughly 5% and the semiconductor index about 16%, while the equal-weighted S&P 500 gained roughly 5%.
Summary
Hedge funds raised bearish exposure to major US technology stocks in October 2026, as concerns over artificial intelligence valuations and infrastructure financing prompted a sharp rotation away from the sector, according to research from Data Insights. The firm's October 2026 Crowding Report found that the number of hedge funds holding short positions increased across Amazon, Apple, Nvidia and Meta. Tesla was the only Magnificent Seven stock to see a reduction in short holders.
Positioning in semiconductors also deteriorated. The share of companies in the PHLX Semiconductor Index with net long positioning fell to 70%. Advanced Micro Devices moved from a long bias to a short bias, with its long-to-short fund count ratio declining from 1.18 to 0.94 and net long exposure falling from 77.9% to 44.4%. Nvidia remained the most crowded long position in the sector, followed by Broadcom and Applied Materials.
AI infrastructure provider CoreWeave came under particular pressure, with its shares declining approximately 37% in October as credit-risk concerns intensified. Its long-to-short fund count ratio fell from 0.60 to 0.53, and net long exposure declined to 55.9%, compared with around 80% earlier in the year. The company's 2032 bonds yielded close to 15%, highlighting growing investor concern over AI infrastructure financing.
Outside technology, the report identified increased long positioning in Rolls-Royce, Balfour Beatty and Johnson Matthey in Europe, alongside rising short interest in Kering, BT Group and Capgemini. In Asia Pacific, managers increased bullish positioning in Renesas Electronics while adding bearish exposure to Toyota, Ibiden and several other Japanese companies.
The findings are based on anonymised positioning data covering approximately 16,000 securities across more than 700 hedge funds. They point to a widening divergence between technology and other equity sectors: while the Nasdaq Composite declined roughly 5% in October and the semiconductor index fell around 16%, the equal-weighted S&P 500 gained approximately 5%, reflecting stronger performance outside the largest technology stocks.
Positioning in semiconductors also deteriorated. The share of companies in the PHLX Semiconductor Index with net long positioning fell to 70%. Advanced Micro Devices moved from a long bias to a short bias, with its long-to-short fund count ratio declining from 1.18 to 0.94 and net long exposure falling from 77.9% to 44.4%. Nvidia remained the most crowded long position in the sector, followed by Broadcom and Applied Materials.
AI infrastructure provider CoreWeave came under particular pressure, with its shares declining approximately 37% in October as credit-risk concerns intensified. Its long-to-short fund count ratio fell from 0.60 to 0.53, and net long exposure declined to 55.9%, compared with around 80% earlier in the year. The company's 2032 bonds yielded close to 15%, highlighting growing investor concern over AI infrastructure financing.
Outside technology, the report identified increased long positioning in Rolls-Royce, Balfour Beatty and Johnson Matthey in Europe, alongside rising short interest in Kering, BT Group and Capgemini. In Asia Pacific, managers increased bullish positioning in Renesas Electronics while adding bearish exposure to Toyota, Ibiden and several other Japanese companies.
The findings are based on anonymised positioning data covering approximately 16,000 securities across more than 700 hedge funds. They point to a widening divergence between technology and other equity sectors: while the Nasdaq Composite declined roughly 5% in October and the semiconductor index fell around 16%, the equal-weighted S&P 500 gained approximately 5%, reflecting stronger performance outside the largest technology stocks.
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