what is the best stock performance in 2021 in spx

SPX (SPXC) returned 8.5% in 2021.

DATE OPEN HIGH LOW CLOSE VOLUME
December 31 2021
$59.37
$59.93
$58.33
$59.68
100,000
December 30 2021
$59.81
$60.39
$59.10
$59.23
113,200
December 29 2021
$59.25
$59.97
$58.62
$59.91
89,900
December 28 2021
$58.59
$59.61
$58.59
$59.31
227,300
December 27 2021
$57.94
$59.07
$57.48
$58.82
155,500
December 23 2021
$58.18
$58.50
$57.82
$57.87
73,200
December 22 2021
$57.84
$58.65
$57.54
$57.99
167,400
December 21 2021
$55.80
$58.03
$55.27
$57.99
235,300
December 20 2021
$55.89
$55.90
$53.61
$54.77
293,300
December 17 2021
$57.60
$57.92
$56.08
$56.73
788,500
December 16 2021
$59.49
$59.59
$57.33
$58.02
193,100
December 15 2021
$59.04
$59.54
$58.40
$58.88
302,500
December 14 2021
$59.46
$60.50
$58.83
$58.94
114,800
December 13 2021
$59.84
$60.34
$59.74
$59.79
101,500
December 10 2021
$60.46
$60.46
$58.95
$59.84
124,500
December 09 2021
$60.68
$60.68
$59.45
$59.61
105,900
December 08 2021
$61.56
$61.56
$60.52
$61.20
96,300
December 07 2021
$61.73
$62.14
$60.99
$61.18
76,600
December 06 2021
$60.45
$61.61
$60.17
$60.81
129,700
December 03 2021
$60.84
$60.98
$58.68
$59.39
105,800
December 02 2021
$58.50
$60.87
$58.50
$60.45
106,800
December 01 2021
$59.94
$60.69
$58.17
$58.20
118,400
November 30 2021
$60.10
$60.23
$57.69
$58.15
194,900
November 29 2021
$61.77
$61.77
$59.78
$61.04
145,800
November 26 2021
$61.90
$62.79
$59.73
$60.46
83,100