The article calculates that applying Black Monday's 20.47% S&P 500 decline of October 1987 to Friday's close would erase about 1,568 points, leaving the index near 6,092, and wipe out roughly $14.0 trillion of market value. It stresses this is simple arithmetic, not a prediction. On Friday the S&P 500 fell 1.1% to 7,659.44, the Dow slipped 0.3% to 52,002.41 and the Nasdaq Composite dropped 2.1% to 26,140.03; the S&P 500 and Nasdaq had their worst week since June, led by chip stocks. Michael Burry, reportedly short NVIDIA and Micron, wrote that markets may be near a major top, pointing to leverage from volatility-targeting and momentum strategies. Under the circuit-breaker rules, the 20% decline level sits near 6,128, so a 1987-size drop would trigger a market-wide halt for the rest of the day.
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S&P 500NasdaqMichael Burrycircuit breakers
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Related tickers and likely impact
QQQ
▼ Likely negativeInvesco QQQ Trust
Relevance: low
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/16/2026 | 709.82 |
| Change that session | -2.50% |
SPY
▼ Likely negativeSPDR S&P 500 ETF
Relevance: low
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/16/2026 | 763.31 |
| Change that session | -1.10% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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