Philadelphia Semiconductor Index Falls for Eighth Straight Session as Short Sellers Gain $32 Billion
10/17/2026 — 10/17, 10:17·2 sources (all)·3 reports (all)
Key takeaways
- The Philadelphia Semiconductor Index fell for an eighth consecutive session, bringing its decline over the past seven trading days to more t…
Background & analysis
On October 17, US stocks fell across the board as technology shares came under a fresh round of selling. The Nasdaq Composite opened lower and extended its decline to close down 2.14%, while the S&P 500 fell 1.09% and the Dow Jones Industrial Average, which had opened higher, reversed to close down 0.34%. For the week, the S&P 500 lost 1.95% and the Nasdaq fell 4.48%, while the Dow gained 0.67%.
AI-generated from 1 reports · updated 2 hours ago
Latest turnAccording to Bloomberg, the Philadelphia Semiconductor Index has dropped more than 12% over the past seven sessions and fell for an eighth straight day on the 16th, on track to match its longest losing streak since 2006, handing short sellers an estimated $32 billion in paper gains. Investors are worried about rising rates, stretched valuations and the sheer scale of AI infrastructure spending.
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According to Bloomberg, the Philadelphia Semiconductor Index has dropped more than 12% over the past seven sessions and fell for an eighth straight day on the 16th, on track to match its longest losing streak since 2006, handing short sellers an estimated $32 billion in paper gains. Investors are worried about rising rates, stretched valuations and the sheer scale of AI infrastructure spending.
IT之家AI score 55Nvidia CEO Jensen Huang said AI's positive impact will outweigh investor concerns after a turbulent week for chip and AI infrastructure stocks, adding that recent headlines do not change the fundamentals. The Philadelphia Semiconductor Index fell for eight straight sessions, its longest losing streak since 2008, and Nvidia closed lower in seven of the past eight trading days.
IT之家AI score 62US stocks fell across the board on Oct 17, with the Nasdaq down 2.14% and the Philadelphia Semiconductor Index dropping more than 3.5% for an eighth straight session — its longest losing streak since 2008. NVIDIA CEO Jensen Huang responded to the AI-market turmoil by saying 'this too shall pass.'
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