Andreas Halvorsen's AON Position Overview
Andreas Halvorsen (via Viking Global Investors Lp) currently holds 1.41 M shares of Aon plc (AON) worth $504.42 M, representing 1.31% of the portfolio. First purchased in 2020-Q2, this medium-term investment has been held for 14 quarters.
Based on 13F filings, Andreas Halvorsen has maintained a strategic position in AON, demonstrating sustained confidence in this investment. Largest addition occurred in Q4 2021, adding 1.51 M shares. Largest reduction occurred in Q3 2021, reducing 2.9 M shares.
Analysis based on 13F filings available since 2013 Q2
Andreas Halvorsen's Aon plc (AON) Holding Value Over Time
Track share changes against reported price movement
Quarterly Aon plc (AON) Trades by Andreas Halvorsen
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2020 | +2.96 M | New Buy | 2.96 M | $192.60 |
| Q3 2020 | +56,877 | Add 1.92% | 3.01 M | $206.30 |
| Q4 2020 | -442,286 | Reduce 14.68% | 2.57 M | $211.27 |
| Q1 2021 | -416,131 | Reduce 16.19% | 2.15 M | $230.11 |
| Q2 2021 | +748,565 | Add 34.74% | 2.9 M | $238.76 |
| Q3 2021 | -2.9 M | Sold Out | 0 | $0.00 |
| Q4 2021 | +1.51 M | New Buy | 1.51 M | $300.56 |
| Q1 2022 | +82,563 | Add 5.47% | 1.59 M | $325.63 |
| Q2 2022 | -888,441 | Reduce 55.77% | 704,639 | $269.68 |
| Q3 2022 | -704,639 | Sold Out | 0 | $0.00 |
| Q3 2024 | +563,027 | New Buy | 563,027 | $345.99 |
| Q4 2024 | +157,337 | Add 27.94% | 720,364 | $359.16 |
| Q1 2025 | -720,364 | Sold Out | 0 | $0.00 |
| Q3 2025 | +1.41 M | New Buy | 1.41 M | $356.58 |
Andreas Halvorsen's Aon plc Investment FAQs
Andreas Halvorsen first purchased Aon plc (AON) in Q2 2020, acquiring 2,956,029 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Andreas Halvorsen has held Aon plc (AON) for 14 quarters since Q2 2020.
Andreas Halvorsen's largest addition to Aon plc (AON) was in Q2 2020, adding 2,956,029 shares worth $569.33 M.
According to the latest 13F filing for Q3 2025, Andreas Halvorsen's firm, Viking Global Investors Lp, owns 1,414,618 shares of Aon plc (AON), valued at approximately $504.42 M.
As of the Q3 2025 filing, Aon plc (AON) represents approximately 1.31% of Andreas Halvorsen's publicly disclosed stock portfolio, making it one of their key holdings.
Andreas Halvorsen's peak holding in Aon plc (AON) was 3,012,906 shares, as reported at the end of Q3 2020.