Bill Nygren - Oakmark Funds
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    156
Portfolio value:    $74,879,237,060
Holdings Activity Buys Sells    History
Holding/activity history for  Aon plc (AON)
← All AON superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 0 0.00 Sell 100.00% <0.01 $306.52–344.65 · VW $322.41i SEC
2025   Q4 699 <0.01 Reduce 0.71% $304.59–358.55 · VW $332.87i $246,663 SEC
2025   Q3 704 <0.01 Add 0.72% $324.28–375.87 · VW $351.36i $251,032 SEC
2025   Q2 699 <0.01 Buy <0.01 $345.78–381.00 · VW $364.59i $249,375 SEC
2023   Q2 0 0.00 Sell 100.00% <0.01 $308.10–347.37 · VW $329.62i SEC
2023   Q1 1,910 <0.01 $315.29 $602,204 SEC
2022   Q4 1,910 <0.01 Reduce 54.42% <0.01 $295.00–328.33 · VW $309.13i $573,267 SEC
2022   Q3 4,190 <0.01 Reduce 1.18% $266.35–309.00 · VW $294.54i $1,122,000 SEC
2022   Q2 4,240 <0.01 Reduce 5.36% <0.01 $246.21–303.29 · VW $276.25i $1,143,000 SEC
2022   Q1 4,480 <0.01 Reduce 58.15% <0.01 $255.90–341.98 · VW $291.18i $1,459,000 SEC
2021   Q4 10,705 0.01 Reduce 26.60% <0.01 $259.59–303.92 · VW $285.22i $3,217,000 SEC
2021   Q3 14,584 0.01 Reduce 5.96% <0.01 $283.56–326.25 · VW $301.86i $4,168,000 SEC
2021   Q2 15,508 0.01 $238.78 $3,703,000 SEC
2021   Q1 15,508 0.01 Add 48.33% <0.01 $221.82–260.97 · VW $245.39i $3,569,000 SEC
2020   Q4 10,455 <0.01 Reduce 1.92% <0.01 $200.65–235.88 · VW $221.41i $2,209,000 SEC
2020   Q3 10,660 0.01 Reduce 87.15% 0.03 $179.52–216.49 · VW $200.30i $2,199,000 SEC
2020   Q2 82,969 0.04 Buy 0.04 $177.21–208.74 · VW $195.31i $15,980,000 SEC
2020   Q1 0 0.00 Sell 100.00% 0.09 $143.93–225.56 · VW $188.81i SEC
2019   Q4 237,977 0.09 Reduce 8.19% <0.01 $198.60–238.19 · VW $214.93i $49,568,000 SEC
2019   Q3 259,192 0.10 Reduce 18.19% 0.02 $184.52–205.87 · VW $198.00i $50,172,000 SEC
2019   Q2 316,841 0.11 Reduce 6.63% <0.01 $179.93–198.61 · VW $191.13i $61,144,000 SEC
2019   Q1 339,342 0.11 Reduce 70.47% 0.24 $156.09–182.61 · VW $172.92i $57,926,000 SEC
2018   Q4 1,149,105 0.34 Reduce 50.10% 0.28 $135.30–173.53 · VW $160.12i $167,034,000 SEC
2018   Q3 2,302,911 0.56 Reduce 3.74% 0.02 $144.84–166.41 · VW $158.79i $354,142,000 SEC
2018   Q2 2,392,409 0.53 Reduce 26.16% 0.20 $134.82–148.28 · VW $142.89i $328,167,000 SEC
2018   Q1 3,239,826 0.77 Reduce 15.80% 0.13 $136.30–148.44 · VW $141.54i $454,645,000 SEC
2017   Q4 3,847,763 0.85 Reduce 0.66% <0.01 $130.87–147.98 · VW $139.72i $515,600,000 SEC
2017   Q3 3,873,439 0.97 Reduce 19.50% 0.23 $137.85–152.78 · VW $143.62i $565,909,000 SEC
2017   Q2 4,811,614 1.17 Reduce 28.32% 0.42 $129.82–141.45 · VW $136.81i $639,704,000 SEC
2017   Q1 6,712,360 1.47 Reduce 0.76% 0.01 $114.95–131.62 · VW $125.83i $796,690,000 SEC
2016   Q4 6,763,670 1.47 Reduce 5.19% 0.08 $109.82–117.80 · VW $114.42i $754,352,000 SEC
2016   Q3 7,134,245 1.62 Reduce 9.02% 0.16 $107.19–114.50 · VW $111.93i $802,532,000 SEC
2016   Q2 7,841,660 1.76 Reduce 11.62% 0.21 $100.55–111.71 · VW $107.87i $856,544,000 SEC
2016   Q1 8,872,540 1.77 Reduce 23.25% 0.43 $95.60–109.65 · VW $104.84i $926,737,000 SEC
2015   Q4 11,560,054 1.86 Reduce 1.67% 0.03 $83.83–97.79 · VW $92.30i $1,065,953,000 SEC
2015   Q3 11,755,909 1.87 Reduce 1.71% 0.03 $86.38–95.75 · VW $92.29i $1,041,691,000 SEC
2015   Q2 11,959,829 1.95 Add 2.88% 0.05 $89.27–104.70 · VW $95.80i $1,192,156,000 SEC
2015   Q1 11,624,927 1.81 Add 1.28% 0.02 $95.29–103.40 · VW $99.97i $1,117,388,000 SEC
2014   Q4 11,478,256 1.73 Add 5.87% 0.10 $89.35–107.08 · VW $98.93i $1,088,483,000 SEC
2014   Q3 10,841,998 1.60 Add 6.35% 0.10 $78.26–92.70 · VW $87.82i $950,518,000 SEC
2014   Q2 10,194,836 1.59 Add 14.70% 0.20 $83.06–91.28 · VW $87.17i $918,453,000 SEC
2014   Q1 8,888,203 1.38 Reduce 0.93% 0.01 $78.60–90.06 · VW $86.20i $749,097,000 SEC
2013   Q4 8,971,660 1.38 Add 325.15% 1.06 $76.49–87.27 · VW $83.12i $752,633,000 SEC
2013   Q3 2,110,240 0.31 Reduce 0.86% <0.01 $65.91–82.55 · VW $76.70i $157,086,000 SEC
2013   Q2 2,128,540 0.29 Add 19.68% 0.05 $62.19–69.59 · VW $66.05i $136,972,000 SEC
2013   Q1 1,778,540 0.25 Add 0.11% <0.01 $58.48–67.26 · VW $63.14i $109,380,000 SEC
2012   Q4 1,776,500 0.24 Add 26.31% 0.05 $54.65–61.87 · VW $59.20i $98,773,000 SEC
2012   Q3 1,406,500 0.19 Add 7.65% 0.01 $51.42–57.92 · VW $55.38i $73,546,000 SEC
2012   Q2 1,306,500 0.16 Buy 0.16 $45.04–53.35 · VW $50.12i $61,118,000 SEC
Price snapshot:
Current price$367.35
52-week low$303.79
52-week high$379.20