when did aon go public

Aon (AON) went public on September 7, 1984, when it opened at a split-adjusted price of $1.99.

DATEOPENHIGHLOWCLOSEVOLUME
November 2025
$339.42
$340.37
$331.14
$339.84
1,474,800
October 2025
$354.37
$369.50
$323.57
$339.94
27,719,300
September 2025
$366.83
$375.05
$347.88
$355.80
26,417,200
August 2025
$355.90
$377.87
$350.67
$366.20
26,653,800
July 2025
$355.60
$379.37
$344.30
$354.19
29,771,400
June 2025
$366.49
$378.29
$345.22
$355.23
27,931,700
May 2025
$349.68
$371.39
$345.93
$370.49
24,530,500
April 2025
$395.87
$398.48
$321.67
$352.53
39,061,200
March 2025
$407.54
$410.34
$384.69
$396.55
27,778,900
February 2025
$367.72
$407.38
$363.11
$406.51
20,158,900
January 2025
$357.59
$375.43
$343.24
$367.79
22,241,100
December 2024
$388.79
$389.09
$349.48
$356.22
21,107,100
November 2024
$362.69
$392.10
$359.19
$388.34
20,918,600
October 2024
$345.39
$385.32
$338.50
$363.20
22,629,100
September 2024
$341.28
$350.00
$335.90
$342.53
15,907,200
August 2024
$326.70
$342.10
$319.72
$340.28
19,885,500
July 2024
$290.86
$325.99
$288.21
$324.56
27,779,200
June 2024
$277.39
$298.25
$275.25
$290.05
35,193,100
May 2024
$277.80
$290.77
$271.76
$278.25
35,332,600
April 2024
$328.20
$328.20
$264.20
$278.62
29,489,100
March 2024
$311.49
$331.22
$306.09
$328.91
15,617,200
February 2024
$292.13
$313.42
$285.54
$311.44
20,852,600
January 2024
$286.65
$307.61
$281.16
$294.13
25,226,400
December 2023
$323.28
$331.48
$280.17
$286.24
26,182,900
November 2023
$305.52
$330.67
$304.42
$323.09
18,013,600