Sorry, I couldn't find pricing data for that day. The closing price for the S&P 500 (GSPC) on March 21, 1997 was $784.10. It was up 0.2% for the day. The latest price is $7,493.74.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
March 21 1997 | $782.65 | $786.44 | $782.65 | $784.10 | 638,760,000 |
Daily pricing data for the S&P 500 dates back to 12/30/1927, and may be incomplete.