Underfolio

Every trading day › 2021

The stock market on August 12, 2021

August 12, 2021, a Thursday. The S&P 500 rose 0.30% to close at 4460.83. Of 4,307 US stocks that traded, 1,671 rose and 2,472 fell.

The S&P 500+0.30%closed at 4460.83
How big a move#16,642of 24,799 trading days since 1928
$100 in the index since$173price only, to September 24, 2026
Stocks that rose1,671of 4,307; 2,472 fell
Biggest companyAppleby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Palantir Tech (PLTR)+11.4%
The Cooper Companies, Inc. (COO)+7.8%
Novavax, Inc. (NVAX)+5.5%

Biggest falls among the 500 largest companies

Coupang (CPNG)-8.3%
Coinbase Global (COIN)-7.9%
Western Digital (WDC)-6.5%

Stock moves count dividends; the index is price only. Market values after 2024 are estimates.

‹ August 11, 2021 · Every August 12 · August 13, 2021 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.