The stock market on August 18, 2021
August 18, 2021, a Wednesday. The S&P 500 fell 1.07% to close at 4400.27. Of 4,311 US stocks that traded, 1,396 rose and 2,743 fell.
The S&P 500-1.07%closed at 4400.27
How big a move#5,432of 24,799 trading days since 1928
$100 in the index since$175price only, to September 24, 2026
Stocks that rose1,396of 4,311; 2,743 fell
Biggest companyAppleby market value that day
Biggest rises among the 500 largest companies
| Lowe's (LOW) | +9.6% |
| Robinhood (HOOD) | +6.7% |
| Roblox (RBLX) | +6.1% |
Biggest falls among the 500 largest companies
| Wayfair Inc. (W) | -6.0% |
| Advanced Micro Devices (AMD) | -3.8% |
| CME Group Inc. (CME) | -3.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
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Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.