Sorry, I couldn't find pricing data for that day. The closing price for Amazon (AMZN) on December 23, 1999 was $4.50. It was down 8.2% for the day. The latest price is $231.05.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 23 1999
$4.90
$4.95
$4.45
$4.50
258,247,996
Daily pricing data for Amazon dates back to 5/15/1997, and may be incomplete.