Sorry, I couldn't find pricing data for that day. The closing price for Microsoft (MSFT) on December 31, 1999 was $35.44. It was down 0.6% for the day. The latest price is $495.63.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
December 31 1999 | $35.67 | $35.74 | $35.29 | $35.44 | 12,517,600 |
Daily pricing data for Microsoft dates back to 3/13/1986, and may be incomplete.