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Thomas Steyer’s Aon AON Stock Holding History

Thomas Steyer’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 		$459M Sell
1,382,562
-1,130,076
-45% -$365M 2.12% 14
2026
Q1 		$811M Sell
2,512,638
-152,600
-6% -$50.7M 4.25% 6
2025
Q4 		$941M Buy
2,665,238
+387,221
+17% +$135M 4.07% 6
2025
Q3 		$812M Buy
2,278,017
+291,600
+15% +$105M 3.33% 5
2025
Q2 		$709M Buy
1,986,417
+624,673
+46% +$226M 2.98% 6
2025
Q1 		$378M Sell
1,361,744
-470,989
-26% -$181M 1.81% 22
2024
Q4 		$658M Buy
1,832,733
+126,733
+7% +$46.6M 2.89% 9
2024
Q3 		$590M Sell
1,706,000
-169,200
-9% -$55.4M 2.59% 8
2024
Q2 		$551M Buy
1,875,200
+1,243,200
+197% +$368M 2.36% 9
2024
Q1 		$211M Buy
+632,000
New +$196M 0.89% 32
2023
Q4 		– Sell
-665,661
Closed -$216M – 160
2023
Q3 		$216M Sell
665,661
-162,125
-20% -$53.6M 1.01% 31
2023
Q2 		$286M Buy
827,786
+23,100
+3% +$7.5M 1.43% 24
2023
Q1 		$254M Buy
804,686
+16,600
+2% +$5.14M 1.39% 30
2022
Q4 		$237M Sell
788,086
-20,400
-3% -$5.96M 1.4% 28
2022
Q3 		$217M Sell
808,486
-120,000
-13% -$33.9M 1.19% 32
2022
Q2 		$250M Sell
928,486
-85,500
-8% -$24.6M 1.36% 29
2022
Q1 		$330M Sell
1,013,986
-179,500
-15% -$52.2M 1.59% 20
2021
Q4 		$359M Sell
1,193,486
-68,829
-5% -$20.6M 1.79% 17
2021
Q3 		$361M Sell
1,262,315
-1,380,299
-52% -$371M 1.68% 18
2021
Q2 		$631M Buy
2,642,614
+188,420
+8% +$46M 2.58% 7
2021
Q1 		$565M Buy
2,454,194
+182,680
+8% +$40.2M 2.81% 6
2020
Q4 		$480M Buy
2,271,514
+515,170
+29% +$105M 2.89% 7
2020
Q3 		$362M Buy
1,756,344
+35,846
+2% +$7.16M 2.51% 11
2020
Q2 		$331M Buy
+1,720,498
New +$321M 2.65% 10

Other funds holding AON

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Thomas Steyer's AON Position: Q2 2026 in Review

Thomas Steyer reduced its Aon (AON) stake by 45% in Q2 2026, selling an estimated $365M and leaving 1,382,562 shares worth $459M. The position accounts for 2.12% of the portfolio, ranked #14.

Thomas Steyer first reported a position in AON in Q2 2020 and has held it in 24 quarters since. The position peaked at $941M in Q4 2025. 1,256 funds tracked by Wall St. Rank hold AON as of Q2 2026.

  • Thomas Steyer held 1,382,562 shares of Aon worth $459M as of Q2 2026.
  • Thomas Steyer sold 1,130,076 Aon shares in Q2 2026, an estimated $365M.
  • Aon made up 2.12% of Thomas Steyer's portfolio in Q2 2026, its #14 holding.
  • Thomas Steyer first reported a position in Aon in Q2 2020 and has held it in 24 quarters since.
  • Thomas Steyer's Aon position peaked at $941M in Q4 2025.
  • 1,256 funds tracked by Wall St. Rank held Aon as of Q2 2026.

Based on Farallon Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.