The stock market on October 18, 1971
October 18, 1971, a Monday. The S&P 500 fell 0.45% to close at 97.35. Of 2,367 US stocks that traded, 654 rose and 1,219 fell.
The S&P 500-0.45%closed at 97.35
How big a move#13,377of 24,799 trading days since 1928
$100 in the index since$7,914price only, to September 24, 2026
Stocks that rose654of 2,367; 1,219 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| IDACORP, Inc. (IDA) | +3.3% |
| FirstEnergy (FE) | +3.2% |
| Rhone-Poulenc Rorer (RPR) | +3.2% |
Biggest falls among the 500 largest companies
| Litton Industries (LIT) | -7.4% |
| Eli Lilly (LLY) | -7.2% |
| Kerr-McGee (KMG) | -6.9% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 15, 1971 · Every October 18 · October 19, 1971 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.