The stock market on September 28, 1970
September 28, 1970, a Monday. The S&P 500 rose 1.30% to close at 83.91. Of 2,274 US stocks that traded, 929 rose and 900 fell.
The S&P 500+1.30%closed at 83.91
How big a move#3,992of 24,799 trading days since 1928
$100 in the index since$9,181price only, to September 24, 2026
Stocks that rose929of 2,274; 900 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Rockwell Automation (ROK) | +8.8% |
| Coleman Co Inc -old | +8.8% |
| Hewlett-Packard (HWP) | +8.8% |
Biggest falls among the 500 largest companies
| Memorex Corp (MRX) | -11.3% |
| H&R Block (HRB) | -5.9% |
| Rhone-Poulenc Rorer (RPR) | -5.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 25, 1970 · Every September 28 · September 29, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.