The Nasdaq-100 fell about 5.5% in the week ending Oct. 16, its worst week since the one ending April 4, 2025, when it lost almost 10%. Chip stocks led the decline, with the VanEck Semiconductor ETF down about 10% that week, amid investor worries about borrowing to fund AI capital spending, hotter-than-expected inflation, and oil above $100 a barrel. The Invesco QQQ Trust was around $724, about 5% below its record close of about $760 on Oct. 6. Based on the author's analysis of QQQ's prices, the fund was higher a year later after 25 of 26 comparable weeks since 2010, with a median gain of around 22%, and after 47 of 71 such weeks since 1999. The main exceptions were in 2022, when QQQ was down around 29% a year later, and the dot-com bust, when none of 18 qualifying weeks from January 2000 through mid-2002 was followed by a gain. The author says it is too early to tell whether the week ending Oct. 16 was a brief scare or the start of a longer slide.
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Original headline: The Nasdaq - 100 Had Its Worst Week in 18 Months . History Says the Following Year Has Usually Been Strong .
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Related tickers and likely impact
QQQ
• NeutralInvesco QQQ Trust
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/23/2026 | 704.39 |
| Change that session | -0.01% |
SPY
• NeutralSPDR S&P 500 ETF
Relevance: low
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/23/2026 | 759.85 |
| Change that session | -0.54% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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