Underfolio

Every trading day › 1985

The stock market on May 13, 1985

May 13, 1985, a Monday. The S&P 500 rose 0.18% to close at 184.61. Of 5,723 US stocks that traded, 1,815 rose and 1,651 fell.

The S&P 500+0.18%closed at 184.61
How big a move#19,627of 24,799 trading days since 1928
$100 in the index since$4,173price only, to September 24, 2026
Stocks that rose1,815of 5,723; 1,651 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Pharmacia (PNU)+6.5%
L Brands (LTD)+5.9%
Signal Companies (SGN)+4.9%

Biggest falls among the 500 largest companies

Advanced Micro Devices (AMD)-5.8%
Pioneer Corp-Texas (PNA)-4.4%
Sonat Inc. (SNT)-3.9%

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

‹ May 10, 1985 · Every May 13 · May 14, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.