Sorry, I couldn't find pricing data for that day. The closing price for Pfizer (PFE) on December 31, 1999 was $12.06. It was down 0.2% for the day. The latest price is $24.78.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 31 1999
$12.09
$12.13
$11.97
$12.06
5,939,817
Daily pricing data for Pfizer dates back to 6/1/1972, and may be incomplete.