Sorry, I couldn't find pricing data for that day. The closing price for the S&P 500 (GSPC) on January 16, 2009 was $850.12. It was up 0.7% for the day. The latest price is $6,643.44.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
January 16 2009
$844.45
$858.13
$830.66
$850.12
6,786,040,000
Daily pricing data for the S&P 500 dates back to 12/30/1927, and may be incomplete.