Sorry, I couldn't find pricing data for that day. The closing price for SPY on December 23, 1999 was $91.56. It was up 1% for the day. The latest price is $779.13.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 23 1999 | $90.64 | $91.56 | $90.63 | $91.56 | 5,721,700 |
Daily pricing data for SPY dates back to 1/29/1993, and may be incomplete.