Sorry, I couldn't find pricing data for that day. The closing price for the S&P 500 (GSPC) on December 29, 2000 was $1,320.28. It was down 1% for the day. The latest price is $5,954.61.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 29 2000
$1,334.22
$1,340.10
$1,317.51
$1,320.28
1,035,500,000
Daily pricing data for the S&P 500 dates back to 12/30/1927, and may be incomplete.