Marshall Wace’s Aon AON Stock Holding History

Marshall Wace’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 Q4	–	Sell	-200	Closed	-$71.3K	–	2928
2025 Q3	$71.3K	Buy	+200	New	+$72.3K	﹤0.01%	2696

Other funds holding AON

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Marshall Wace's AON Position: Q1 2026 in Review

Marshall Wace sold out of Aon (AON) in Q1 2026, closing a stake of 35,374 shares — an estimated $12.5M sold.

Marshall Wace first reported a position in AON in Q2 2014 and held it in 23 quarters. The position peaked at $86.2M in Q2 2025. 1,253 funds tracked by Wall St. Rank hold AON as of Q1 2026.

Marshall Wace reported no remaining Aon position as of Q1 2026 after selling out during the quarter.
Marshall Wace sold 35,374 Aon shares in Q1 2026, an estimated $12.5M.
Marshall Wace first reported a position in Aon in Q2 2014 and held it in 23 quarters.
Marshall Wace's Aon position peaked at $86.2M in Q2 2025.
1,253 funds tracked by Wall St. Rank held Aon as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.