Intel Plunges 28%, Philadelphia Semiconductor Index Falls 7.2%, Taiwan Stock ADRs Move Lower

吳吳孟哲 國際財經記者2026-10-31 07:15

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Intel and Amazon earnings miss expectations, raising market concerns over unclear returns on AI investments, coupled with rising inflation, U.S. stocks closed lower on the 30th, Nasdaq posts largest single-day decline since June, Philadelphia Semiconductor Index falls 7.2%, TSMC ADR falls 5.95%, Taiwan index futures night session closes at 44433.

Intel and Amazon earnings came in below market expectations, raising investor concerns that tech giants continue to ramp up investment in artificial intelligence while returns remain unclear, coupled with rising inflationary pressure, selling in U.S. technology and chip stocks intensified, with major U.S. indexes closing lower on Friday the 30th. The Nasdaq posted its largest single-day decline since June 2026, falling 5.3% in October for its worst monthly performance since March 2025, as market funds continued to exit AI-related supply chains and rotate into defensive stocks.

Four Major U.S. Indexes Close Lower, Philadelphia Semiconductor Index Plunges 829 Points

On the 30th, all four major U.S. indexes closed lower, the Dow Jones Industrial Average fell 572.25 points or 1.09% to close at 51770.31; the S&P 500 fell 140.32 points or 1.82% to close at 7580.07; the tech-heavy Nasdaq fell 747.72 points or 2.86% to close at 25437; the Philadelphia Semiconductor Index fell 829.4 points or 7.2% to close at 10688.801. All of the Magnificent Seven moved lower, Nvidia closed at $204.64, down 4.22%; Meta closed at $614.99, down 1.53%; Apple closed at $344.63, down 1.23%; Alphabet closed at $278.22, down 1.45%; Microsoft closed at $521.91, down 1.55%; Amazon closed at $240.35, down 1.41%; Tesla closed at $399.81, down 0.87%. In addition, Intel shares plunged 28.58% to close at $65.76.

Taiwan ADRs and Memory Stocks Under Pressure Together

In terms of Taiwan ADRs, TSMC ADR closed at $406.13, down 5.95%; Hon Hai ADR closed at $15, down 1.64%; ASE ADR closed at $39.5, down 11.34%; UMC ADR closed at $16.68, down 7.54%; Chunghwa Telecom ADR closed at $48.99, up 0.91%. In memory stocks, SK Hynix ADR closed at $149.21, down 7.95%; SanDisk closed at $1,150.89, down 13.47%; Micron closed at $884.74, down 5.3%; Western Digital closed at $366.11, down 7.41%; Seagate Technology closed at $644.58, down 7.98%.

Taiwan Index Futures Night Session Falls Below 45,000 Level

Taiwan index futures fell through 47,000, 46,000 and 45,000 over two after-hours trading sessions, closing at 44433, down 867 points or 1.91%. This information is for reference only, investors should make independent judgments, carefully evaluate and bear investment risks.

FAQ

How did the four major U.S. indexes perform on the 30th?

The Dow fell 572.25 points to 51770.31, the S&P 500 fell 140.32 points to 7580.07, the Nasdaq fell 747.72 points to 25437, and the Philadelphia Semiconductor Index fell 829.4 points to 10688.801, all closing lower.

How did Intel and TSMC ADR perform on the day?

Intel plunged 28.58% to $65.76, TSMC ADR fell 5.95% to $406.13, ASE ADR fell 11.34%, and UMC ADR fell 7.54%.

Where did Taiwan index futures close in the night session?

Taiwan index futures fell through 47,000, 46,000 and 45,000 over two after-hours trading sessions, closing at 44433, down 867 points or 1.91%.