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Port Capital’s Aon AON Stock Holding History

Port Capital’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
2025
Q3 		– Sell
-600
Closed -$214K – 85
2025
Q2 		$214K Hold
600
– – 0.01% 84
2025
Q1 		$239K Sell
600
-19
-3% -$7.29K 0.01% 81
2024
Q4 		$222K Sell
619
-15
-2% -$5.52K 0.01% 86
2024
Q3 		$219K Sell
634
-267
-30% -$87.4K 0.01% 85
2024
Q2 		$265K Buy
901
+29
+3% +$8.57K 0.01% 77
2024
Q1 		$291K Buy
872
+72
+9% +$22.3K 0.01% 75
2023
Q4 		$233K Buy
800
+73
+10% +$23.4K 0.01% 83
2023
Q3 		$236K Sell
727
-38
-5% -$12.6K 0.01% 77
2023
Q2 		$264K Buy
+765
New +$248K 0.02% 75

Other funds holding AON

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Berkshire Hathaway
Berkshire Hathaway Omaha, Nebraska $263B AUM 16.68% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return

Port Capital's AON Position: Q3 2025 in Review

Port Capital sold out of Aon (AON) in Q3 2025, closing a stake of 600 shares — an estimated $214K sold.

Port Capital first reported a position in AON in Q2 2023 and held it in 9 quarters. The position peaked at $291K in Q1 2024. 1,248 funds tracked by Wall St. Rank hold AON as of Q3 2025.

  • Port Capital reported no remaining Aon position as of Q3 2025 after selling out during the quarter.
  • Port Capital sold 600 Aon shares in Q3 2025, an estimated $214K.
  • Port Capital first reported a position in Aon in Q2 2023 and held it in 9 quarters.
  • Port Capital's Aon position peaked at $291K in Q1 2024.
  • 1,248 funds tracked by Wall St. Rank held Aon as of Q3 2025.

Based on Port Capital's 13F filing for Q3 2025, filed 14 Nov 2025.