Sorry, I couldn't find pricing data for that day. The closing price for Microsoft (MSFT) on December 31, 2009 was $22.95. It was down 1.6% for the day. The latest price is $408.94.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 31 2009
$23.33
$23.33
$22.95
$22.95
31,929,700
Daily pricing data for Microsoft dates back to 3/13/1986, and may be incomplete.