Twin Tree Management
AON icon

Twin Tree Management’s Aon AON Stock Holding History

Twin Tree Management’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
Q2 		– Sell
-15,700
Closed -$6.27M – 1582
2025
Q1 		$6.27M Sell
15,700
-29,900
-66% -$11.5M 0.01% 829
2024
Q4 		$16.4M Buy
45,600
+37,400
+456% +$13.8M 0.03% 529
2024
Q3 		$2.84M Buy
+8,200
New +$2.68M 0.01% 1060
2023
Q2 		– Sell
-11,800
Closed -$3.72M – 1234
2023
Q1 		$3.72M Hold
11,800
– – 0.01% 793
2022
Q4 		$3.54M Buy
+11,800
New +$3.45M 0.01% 820
2022
Q3 		– Sell
-37,900
Closed -$10.2M – 1301
2022
Q2 		$10.2M Buy
+37,900
New +$10.9M 0.02% 639
2021
Q4 		– Sell
-61,900
Closed -$17.7M – 1572
2021
Q3 		$17.7M Buy
+61,900
New +$16.6M 0.04% 403
2020
Q2 		– Sell
-2,000
Closed -$330K – 1441
2020
Q1 		$330K Sell
2,000
-36,900
-95% -$7.55M ﹤0.01% 1017
2019
Q4 		$8.1M Sell
38,900
-26,100
-40% -$5.17M 0.03% 400
2019
Q3 		$12.6M Buy
65,000
+36,900
+131% +$7.12M 0.05% 264
2019
Q2 		$5.42M Hold
28,100
– – 0.03% 439
2019
Q1 		$4.8M Buy
+28,100
New +$4.56M 0.02% 454
2014
Q2 		– Sell
-27,300
Closed -$2.3M – 887
2014
Q1 		$2.3M Sell
27,300
-11,400
-29% -$949K 0.05% 418
2013
Q4 		$3.25M Sell
38,700
-18,400
-32% -$1.46M 0.08% 283
2013
Q3 		$4.25M Buy
57,100
+21,600
+61% +$1.48M 0.14% 145
2013
Q2 		$2.28M Buy
+35,500
New +$2.25M 0.09% 273

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
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 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

Twin Tree Management's AON Position: Q4 2025 in Review

Twin Tree Management sold out of Aon (AON) in Q4 2025, closing a stake of 411 shares — an estimated $147K sold.

Twin Tree Management first reported a position in AON in Q2 2013 and held it in 23 quarters. The position peaked at $39.7M in Q3 2021. 1,279 funds tracked by Wall St. Rank hold AON as of Q4 2025.

  • Twin Tree Management reported no remaining Aon position as of Q4 2025 after selling out during the quarter.
  • Twin Tree Management sold 411 Aon shares in Q4 2025, an estimated $147K.
  • Twin Tree Management first reported a position in Aon in Q2 2013 and held it in 23 quarters.
  • Twin Tree Management's Aon position peaked at $39.7M in Q3 2021.
  • 1,279 funds tracked by Wall St. Rank held Aon as of Q4 2025.

Based on Twin Tree Management's 13F filing for Q4 2025, filed 11 Feb 2026.