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AON — AON PLC

Reported value held$37.22B
Funds holding (latest)59
SectorFinancials

Index member: S&P 500

Funds holding (Q2 2026)47
Institutional value$28.39B · 88.62M sh
New / Add / Cut / Exit2 / 19 / 24 / 4
Top-5 / Top-10 concentration58.4% / 76.9%
Institutional holdings change Accumulating +2.2% (+1.91M sh)
Institutional value change Up +2.8%

As of Q2 2026, 47 SEC-registered investment managers reported holding AON (AON PLC) in their latest 13F filings, with a combined reported value of $28.39B across 88.62M shares. That is +2.2% by share count (+1.91M shares) versus the previous quarter, while reported value moved +2.8%. Ownership is concentrated: the five largest holders account for 58.4% of reported value and the top ten for 76.9%.

Compared with the prior quarter, 2 opened new positions, 19 added to existing stakes, 24 trimmed, 4 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

AON is a constituent of the S&P 500 and is classified in the Financials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 20.17M $7.12B 0.10% Add
BlackRock Inc history Q2 2026 15.72M $5.21B 0.08% Reduce
Capital World Investors history Q2 2026 11.71M $3.88B 0.48% Add
Dodge & Cox history Q2 2026 8.59M $2.85B 1.49% Add
MFS Investment Management history Q2 2026 7.62M $2.58B 0.86% Reduce
Morgan Stanley history Q2 2026 6.21M $2.06B 0.12% Reduce
Geode Capital Management history Q2 2026 5.18M $1.71B 0.09% Reduce
Berkshire Hathaway history Q4 2025 3.60M $1.27B 0.46% Reduce
BNY Mellon history Q2 2026 3.19M $1.06B 0.18% Reduce
Norges Bank Investment Management history Q2 2026 2.80M $927.66M 0.09% Reduce
Arrowstreet Capital history Q2 2026 2.61M $867.29M 0.39% Add
Northern Trust Corp history Q2 2026 2.04M $676.82M 0.08% Reduce
AQR Capital Management history Q2 2026 1.91M $623.01M 0.22% Add
Goldman Sachs Group history Q2 2026 1.75M $580.06M 0.05% Add
Bank of America Corp history Q2 2026 1.62M $538.99M 0.04% Add
Farallon Capital Management history Q2 2026 1.38M $458.58M 2.13% Reduce
Charles Schwab Investment Management history Q2 2026 1.35M $446.24M 0.06% Reduce
Legal & General Investment Management America history Q2 2026 1.29M $427.50M 0.09% Reduce
Viking Global Investors history Q2 2026 1.15M $381.86M 1.11% Add
Lazard Asset Management history Q2 2026 1.12M $372.45M 0.58% Reduce

View all 59 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 14.26M 14.76M 15.10M 15.93M 15.85M 16.24M 16.15M 15.72M
Capital World Investors 4.24M 4.41M 8.94M 9.63M 9.96M 9.89M 9.61M 9.59M 9.78M 9.74M 9.75M 12.04M 12.07M 12.10M 12.10M 12.14M 12.08M 12.25M 11.48M 11.71M
Dodge & Cox — — — — — — — — — — — — — — — — 3.46M 7.85M 8.12M 8.59M
MFS Investment Management 18.69M 18.08M — 16.42M 16.36M 15.70M 15.53M 15.21M 13.61M 12.47M 12.24M 12.55M 12.16M 11.62M 9.83M 8.95M 8.76M 8.55M 8.36M 7.62M
Morgan Stanley 760.02K 967.33K 817.26K 1.55M 1.60M 2.22M 5.58M 5.84M 5.76M 6.19M 7.21M 8.21M 8.12M 8.38M 8.73M 9.47M 6.14M 5.57M 6.37M 6.21M
Geode Capital Management 4.11M 3.50M 3.55M 3.51M 4.00M 4.02M 3.62M 4.15M 3.75M 4.20M 3.90M 4.28M 4.32M 4.95M 5.41M 5.59M 5.11M 5.14M 5.24M 5.18M
BNY Mellon 2.47M 2.26M 2.12M 2.18M 1.98M 1.91M 1.88M 1.97M 1.87M 1.44M 1.45M 2.00M 2.22M 2.56M 3.03M 3.51M 3.72M 3.48M 3.32M 3.19M
Norges Bank Investment Management — — — — — 1.14M — — — 1.45M — 1.97M — 1.66M — 2.12M — 3.28M — 2.80M
Arrowstreet Capital 1.67M 1.28M — — — 3.35K 17.14K 31.90K 5.48K 4.43K 3.79K — — — 16.83K 78.75K 177.09K 456.55K 797.42K 2.61M
Northern Trust Corp 3.00M 2.87M 2.80M 2.57M 2.53M 2.47M 2.44M 2.23M 2.24M 2.14M 2.03M 2.09M 1.98M 2.16M 2.29M 2.27M 2.21M 2.10M 2.08M 2.04M
AQR Capital Management 160.75K 154.32K 155.01K 151.74K 159.65K 146.19K 135.25K 129.06K 126.84K 113.46K 88.66K 55.79K 29.24K 36.00K 34.08K 42.12K 114.39K 430.17K 979.75K 1.91M
Goldman Sachs Group 1.12M 977.11K 804.15K 830.22K 857.58K 936.45K 971.62K 1.23M 940.08K 984.90K 752.92K 1.10M 969.45K 1.12M 1.15M 1.29M 1.31M 1.41M 1.58M 1.75M
Bank of America Corp 2.79M 2.46M 2.29M 2.32M 2.37M 2.33M 2.50M 2.15M 2.14M 1.61M 1.85M 2.42M 1.94M 2.44M 1.97M 1.47M 1.44M 1.36M 1.58M 1.62M
Farallon Capital Management 1.26M 1.19M 1.01M 928.49K 808.49K 788.09K 804.69K 827.79K 665.66K — 632.00K 1.88M 1.71M 1.83M 1.36M 1.99M 2.28M 2.67M 2.51M 1.38M
Charles Schwab Investment Management 1.03M 1.03M 1.04M 1.03M 1.05M 1.06M 1.06M 1.05M 1.05M 1.06M 1.08M 1.19M 1.21M 1.24M 1.25M 1.28M 1.30M 1.31M 1.36M 1.35M
Legal & General Investment Management America 1.64M 1.56M 1.62M 1.63M 1.48M 1.42M 1.45M 1.45M 1.39M 1.74M 1.70M 1.80M 1.72M 1.38M 1.32M 1.31M 1.41M 1.35M 1.34M 1.29M
Viking Global Investors — 1.51M 1.59M 704.64K — — — — — — — — 563.03K 720.36K — — 1.41M 783.65K 1.09M 1.15M
Lazard Asset Management 5.81M 5.37M 5.08M 5.02M 4.94M 4.78M 4.19M 4.43M 4.48M 3.82M 3.43M 3.27M 2.67M 2.34M 2.24M 1.82M 1.26M 1.29M 1.22M 1.12M
Invesco Ltd 1.45M 1.47M 1.60M 1.73M 1.58M 1.55M 1.39M 1.73M 1.30M 1.21M 1.12M 958.47K 964.95K 1.02M 1.16M 1.25M 1.25M 1.34M 1.49M 1.07M
Amundi US 420.02K 483.08K 322.05K 339.02K 425.10K 418.75K 325.29K 395.82K 500.79K 450.06K 413.38K 538.55K 675.52K 743.66K 831.88K 989.19K 1.38M 1.22M 1.50M 993.71K

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