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Chesley Taft & Associates’s Aon AON Stock Holding History

Chesley Taft & Associates’s Portfolio AON Stock Details AON Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.35M Buy
4,081
+8
+0.2% +$2.58K 0.05% 193
2026
Q1 		$1.31M Sell
4,073
-5
-0.1% -$1.66K 0.06% 191
2025
Q4 		$1.44M Buy
4,078
+6
+0.1% +$2.1K 0.06% 185
2025
Q3 		$1.45M Hold
4,072
– – 0.06% 176
2025
Q2 		$1.45M Hold
4,072
– – 0.06% 175
2025
Q1 		$1.63M Buy
4,072
+650
+19% +$249K 0.08% 157
2024
Q4 		$1.23M Hold
3,422
– – 0.06% 182
2024
Q3 		$1.18M Sell
3,422
-150
-4% -$49.1K 0.06% 183
2024
Q2 		$1.05M Sell
3,572
-7,784
-69% -$2.3M 0.05% 185
2024
Q1 		$3.79M Sell
11,356
-122
-1% -$37.8K 0.19% 97
2023
Q4 		$3.34M Sell
11,478
-43
-0.4% -$13.8K 0.19% 97
2023
Q3 		$3.74M Sell
11,521
-205
-2% -$67.8K 0.24% 87
2023
Q2 		$4.05M Buy
11,726
+60
+0.5% +$19.5K 0.25% 85
2023
Q1 		$3.68M Buy
11,666
+85
+0.7% +$26.3K 0.24% 91
2022
Q4 		$3.48M Buy
11,581
+134
+1% +$39.2K 0.24% 94
2022
Q3 		$3.07M Buy
11,447
+80
+0.7% +$22.6K 0.23% 98
2022
Q2 		$3.06M Buy
11,367
+75
+0.7% +$21.6K 0.21% 106
2022
Q1 		$3.72M Buy
11,292
+145
+1% +$42.2K 0.22% 98
2021
Q4 		$3.35M Buy
11,147
+25
+0.2% +$7.5K 0.17% 112
2021
Q3 		$3.18M Buy
11,122
+110
+1% +$29.5K 0.18% 107
2021
Q2 		$2.63M Buy
11,012
+115
+1% +$28.1K 0.15% 121
2021
Q1 		$2.55M Buy
10,897
+60
+0.6% +$13.2K 0.15% 116
2020
Q4 		$2.29M Sell
10,837
-15
-0.1% -$3.06K 0.15% 116
2020
Q3 		$2.24M Sell
10,852
-235
-2% -$46.9K 0.16% 105
2020
Q2 		$2.13M Sell
11,087
-170
-2% -$31.7K 0.16% 104
2020
Q1 		$1.86M Buy
11,257
+1,120
+11% +$229K 0.17% 102
2019
Q4 		$2.11M Buy
10,137
+50
+0.5% +$9.9K 0.15% 111
2019
Q3 		$1.95M Buy
10,087
+420
+4% +$81K 0.15% 118
2019
Q2 		$1.87M Buy
9,667
+8,117
+524% +$1.47M 0.15% 118
2019
Q1 		$265K Hold
1,550
– – 0.02% 236
2018
Q4 		$225K Hold
1,550
– – 0.02% 244
2018
Q3 		$238K Hold
1,550
– – 0.02% 264
2018
Q2 		$213K Hold
1,550
– – 0.02% 264
2018
Q1 		$218K Sell
1,550
-310
-17% -$43.4K 0.02% 258
2017
Q4 		$249K Hold
1,860
– – 0.02% 269
2017
Q3 		$272K Hold
1,860
– – 0.02% 259
2017
Q2 		$247K Hold
1,860
– – 0.02% 258
2017
Q1 		$221K Hold
1,860
– – 0.02% 265
2016
Q4 		$207K Hold
1,860
– – 0.02% 265
2016
Q3 		$209K Hold
1,860
– – 0.02% 248
2016
Q2 		$203K Buy
+1,860
New +$197K 0.02% 246

Other funds holding AON

PAM
PineStone Asset Management Montreal, Quebec, Canada $16.2B AUM 25.74% 1-Year Est. Return
DC
Davenport & Co Richmond, Virginia $20.4B AUM 18.11% 1-Year Est. Return
SI
Scharf Investments Los Gatos, California $3.03B AUM 7.75% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Ninety One (UK)
Ninety One (UK) London, United Kingdom $44.7B AUM 17.24% 1-Year Est. Return
NONA
Ninety One North America New York $2.13B AUM 9.16% 1-Year Est. Return
GIA
Gateway Investment Advisers Cincinnati, Ohio $10.1B AUM 40.26% 1-Year Est. Return
DS
Dudley & Shanley Palm Beach, Florida $662M AUM 10.7% 1-Year Est. Return
Handelsbanken Fonder
Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return
CNB
Czech National Bank Prague, Czech Republic $18.3B AUM 43.04% 1-Year Est. Return

Chesley Taft & Associates's AON Position: Q2 2026 in Review

Chesley Taft & Associates increased its Aon (AON) stake by 0.2% in Q2 2026, buying an estimated $2.58K and bringing the position to 4,081 shares worth $1.35M. The position accounts for 0.05% of the portfolio, ranked #193.

Chesley Taft & Associates first reported a position in AON in Q2 2016 and has held it in 41 quarters since. The position peaked at $4.05M in Q2 2023. 239 funds tracked by Wall St. Rank hold AON as of Q2 2026.

  • Chesley Taft & Associates held 4,081 shares of Aon worth $1.35M as of Q2 2026.
  • Chesley Taft & Associates bought 8 Aon shares in Q2 2026, an estimated $2.58K.
  • Aon made up 0.05% of Chesley Taft & Associates's portfolio in Q2 2026, its #193 holding.
  • Chesley Taft & Associates first reported a position in Aon in Q2 2016 and has held it in 41 quarters since.
  • Chesley Taft & Associates's Aon position peaked at $4.05M in Q2 2023.
  • 239 funds tracked by Wall St. Rank held Aon as of Q2 2026.

Based on Chesley Taft & Associates's 13F filing for Q2 2026, filed 8 Jul 2026.