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Rossby Financial’s Aon AON Stock Holding History

Rossby Financial’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
Q1 		$50.8K Buy
158
+39
+33% +$13K 0.01% 725
2025
Q4 		$42K Sell
119
-304
-72% -$106K 0.01% 584
2025
Q3 		$152K Buy
423
+17
+4% +$6.15K 0.05% 328
2025
Q2 		$145K Buy
406
+34
+9% +$12.3K 0.05% 310
2025
Q1 		$125K Buy
+372
New +$143K 0.05% 307

Other funds holding AON

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Rossby Financial's AON Position: Q1 2026 in Review

Rossby Financial increased its Aon (AON) stake by 33% in Q1 2026, buying an estimated $13K and bringing the position to 158 shares worth $50.8K. The position accounts for 0.01% of the portfolio, ranked #725.

Rossby Financial first reported a position in AON in Q1 2025 and has held it in 5 quarters since. The position peaked at $152K in Q3 2025. 1,252 funds tracked by Wall St. Rank hold AON as of Q1 2026.

  • Rossby Financial held 158 shares of Aon worth $50.8K as of Q1 2026.
  • Rossby Financial bought 39 Aon shares in Q1 2026, an estimated $13K.
  • Aon made up 0.01% of Rossby Financial's portfolio in Q1 2026, its #725 holding.
  • Rossby Financial first reported a position in Aon in Q1 2025 and has held it in 5 quarters since.
  • Rossby Financial's Aon position peaked at $152K in Q3 2025.
  • 1,252 funds tracked by Wall St. Rank held Aon as of Q1 2026.

Based on Rossby Financial's 13F filing for Q1 2026, filed 11 May 2026.