standard deviation spx

The price for SPX (SPXC) today is $133.97.

DATE OPEN HIGH LOW CLOSE VOLUME
March 21 2025 18:30
$134.19
$134.74
$133.97
$133.97
1,184
March 21 2025 17:30
$133.98
$134.59
$133.91
$134.48
573
March 21 2025 16:30
$133.76
$134.39
$133.48
$134.12
825
March 21 2025 15:30
$133.05
$133.05
$132.28
$133.04
1,356
March 21 2025 14:30
$133.49
$133.54
$132.79
$133.10
678
March 21 2025 13:30
$134.02
$135.13
$132.73
$133.21
1,038
Daily pricing data for SPX dates back to 1/18/1988, and may be incomplete.