The stock market on October 23, 1970
October 23, 1970, a Friday. The S&P 500 rose 0.47% to close at 83.77. Of 2,283 US stocks that traded, 986 rose and 783 fell.
The S&P 500+0.47%closed at 83.77
How big a move#13,008of 24,799 trading days since 1928
$100 in the index since$9,197price only, to September 24, 2026
Stocks that rose986of 2,283; 783 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Pennzoil (PZE) | +6.4% |
| Freeport-McMoran (FTX) | +6.3% |
| Memorex Corp (MRX) | +6.0% |
Biggest falls among the 500 largest companies
| Olin (OLN) | -7.7% |
| Transamerica (TA) | -6.5% |
| CNA Financial Corporation (CNA) | -4.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 22, 1970 · Every October 23 · October 26, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.