The closing price for the S&P 500 (GSPC) on January 2, 2019 was $2,510.03. It was up 1.3% for the day (up 0.1% from previous close). The latest price is $6,073.49.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
January 02 2019
$2,476.96
$2,519.49
$2,467.47
$2,510.03
3,733,160,000
Daily pricing data for the S&P 500 dates back to 12/30/1927, and may be incomplete.