Underfolio

Every trading day › 1999

The stock market on August 9, 1999

August 9, 1999, a Monday. The S&P 500 fell 0.19% to close at 1297.80. Of 6,811 US stocks that traded, 2,422 rose and 3,307 fell.

The S&P 500-0.19%closed at 1297.80
How big a move#19,282of 24,799 trading days since 1928
$100 in the index since$594price only, to September 24, 2026
Stocks that rose2,422of 6,811; 3,307 fell
Biggest companyMicrosoftby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Boston Scientific (BSX)+10.8%
Newmont Mining (NEM)+9.5%
Diamond Offshore Drilling (DO)+9.3%

Biggest falls among the 500 largest companies

At Home Corp-10.7%
Best Buy (BBY)-10.1%
Abovenet Inc (ABVT)-9.8%

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

‹ August 6, 1999 · Every August 9 · August 10, 1999 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.