Underfolio

Every trading day › 1986

The stock market on August 13, 1986

August 13, 1986, a Wednesday. The S&P 500 rose 0.96% to close at 245.67. Of 5,910 US stocks that traded, 2,343 rose and 1,407 fell.

The S&P 500+0.96%closed at 245.67
How big a move#6,403of 24,799 trading days since 1928
$100 in the index since$3,136price only, to September 24, 2026
Stocks that rose2,343of 5,910; 1,407 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for8stocks

Biggest rises among the 500 largest companies

Farmers Group Inc (FGRP.)+6.8%
Citizens Commun -ser B Old (CZN)+5.2%
Marion Merrell Dow Inc (MKC)+5.1%

Biggest falls among the 500 largest companies

Dreyfus Corp (DRY)-5.3%
Cray Research (CYR)-4.6%
Harcourt General (H)-3.7%

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

‹ August 12, 1986 · Every August 13 · August 14, 1986 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.