Mawer Investment Management’s Aon AON Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$412M Sell
1,277,088
-200,605
-14% -$66.7M 2.67% 10
2025
Q4
$521M Sell
1,477,693
-1,020,396
-41% -$356M 2.92% 9
2025
Q3
$891M Sell
2,498,089
-473,444
-16% -$171M 4.63% 5
2025
Q2
$1.06B Sell
2,971,533
-302,041
-9% -$109M 5.38% 3
2025
Q1
$1.31B Sell
3,273,574
-629,153
-16% -$241M 6.31% 2
2024
Q4
$1.4B Sell
3,902,727
-366,738
-9% -$135M 6.36% 1
2024
Q3
$1.48B Sell
4,269,465
-136,315
-3% -$44.6M 6.73% 2
2024
Q2
$1.29B Buy
4,405,780
+52,099
+1% +$15.4M 6.12% 3
2024
Q1
$1.45B Sell
4,353,681
-69,321
-2% -$21.5M 6.74% 2
2023
Q4
$1.29B Sell
4,423,002
-77,367
-2% -$24.8M 6.59% 2
2023
Q3
$1.46B Sell
4,500,369
-92,729
-2% -$30.7M 7.8% 1
2023
Q2
$1.59B Sell
4,593,098
-332,184
-7% -$108M 8.29% 1
2023
Q1
$1.55B Sell
4,925,282
-208,900
-4% -$64.7M 8.47% 1
2022
Q4
$1.54B Sell
5,134,182
-126,952
-2% -$37.1M 8.69% 1
2022
Q3
$1.41B Sell
5,261,134
-110,538
-2% -$31.2M 8.54% 1
2022
Q2
$1.45B Sell
5,371,672
-186,568
-3% -$53.6M 8.23% 1
2022
Q1
$1.81B Sell
5,558,240
-598,360
-10% -$174M 8.6% 1
2021
Q4
$1.85B Buy
6,156,600
+66,280
+1% +$19.9M 8.33% 1
2021
Q3
$1.74B Buy
6,090,320
+39,608
+0.7% +$10.6M 8.34% 1
2021
Q2
$1.44B Buy
6,050,712
+213,878
+4% +$52.3M 7.15% 1
2021
Q1
$1.34B Buy
5,836,834
+230,956
+4% +$50.8M 7.29% 1
2020
Q4
$1.18B Buy
5,605,878
+189,358
+3% +$38.7M 6.98% 1
2020
Q3
$1.12B Sell
5,416,520
-24,814
-0.5% -$4.96M 7.31% 1
2020
Q2
$1.05B Buy
5,441,334
+79,167
+1% +$14.8M 7.72% 1
2020
Q1
$885M Sell
5,362,167
-424,327
-7% -$86.9M 8.14% 1
2019
Q4
$1.21B Buy
5,786,494
+17,478
+0.3% +$3.46M 9.77% 1
2019
Q3
$1.12B Sell
5,769,016
-168,642
-3% -$32.5M 10.22% 1
2019
Q2
$1.15B Sell
5,937,658
-248,007
-4% -$44.9M 7.41% 1
2019
Q1
$1.06B Buy
6,185,665
+448,696
+8% +$72.8M 7.52% 1
2018
Q4
$834M Buy
5,736,969
+161,281
+3% +$25M 6.92% 1
2018
Q3
$857M Buy
5,575,688
+53,439
+1% +$7.82M 6.44% 1
2018
Q2
$757M Buy
5,522,249
+154,272
+3% +$21.7M 6.12% 1
2018
Q1
$753M Buy
5,367,977
+178,402
+3% +$25M 6.31% 1
2017
Q4
$695M Buy
5,189,575
+20,199
+0.4% +$2.88M 5.75% 1
2017
Q3
$755M Buy
5,169,376
+38,212
+0.7% +$5.33M 6.44% 1
2017
Q2
$682M Buy
5,131,164
+122,803
+2% +$15.5M 6.3% 1
2017
Q1
$594M Buy
5,008,361
+213,491
+4% +$24.6M 5.74% 1
2016
Q4
$535M Sell
4,794,870
-97,327
-2% -$10.8M 5.47% 1
2016
Q3
$550M Buy
4,892,197
+130,298
+3% +$14.4M 5.78% 1
2016
Q2
$520M Buy
4,761,899
+252,172
+6% +$26.7M 7.34% 1
2016
Q1
$471M Buy
4,509,727
+484,339
+12% +$45.4M 5.47% 1
2015
Q4
$371M Buy
4,025,388
+427,831
+12% +$39.9M 4.77% 1
2015
Q3
$319M Buy
3,597,557
+416,611
+13% +$40.3M 4.37% 2
2015
Q2
$317M Buy
3,180,946
+270,993
+9% +$27.1M 4.04% 2
2015
Q1
$280M Buy
2,909,953
+113,345
+4% +$11M 3.57% 3
2014
Q4
$265M Buy
2,796,608
+153,402
+6% +$13.7M 3.43% 4
2014
Q3
$232M Buy
2,643,206
+240,319
+10% +$21M 3.1% 6
2014
Q2
$216M Buy
2,402,887
+244,265
+11% +$21.1M 2.88% 7
2014
Q1
$182M Buy
2,158,622
+501,854
+30% +$41.8M 2.58% 8
2013
Q4
$139M Buy
1,656,768
+102,626
+7% +$8.13M 2.03% 12
2013
Q3
$116M Buy
1,554,142
+164,680
+12% +$11.3M 1.86% 14
2013
Q2
$89.5M Buy
+1,389,462
New +$88M 3.33% 3

Other funds holding AON

Mawer Investment Management's AON Position: Q1 2026 in Review

Mawer Investment Management reduced its Aon (AON) stake by 14% in Q1 2026, selling an estimated $66.7M and leaving 1,277,088 shares worth $412M. The position accounts for 2.67% of the portfolio, ranked #10.

Mawer Investment Management first reported a position in AON in Q2 2013 and has held it in 52 quarters since. The position peaked at $1.85B in Q4 2021. 1,253 funds tracked by Wall St. Rank hold AON as of Q1 2026.

  • Mawer Investment Management held 1,277,088 shares of Aon worth $412M as of Q1 2026.
  • Mawer Investment Management sold 200,605 Aon shares in Q1 2026, an estimated $66.7M.
  • Aon made up 2.67% of Mawer Investment Management's portfolio in Q1 2026, its #10 holding.
  • Mawer Investment Management first reported a position in Aon in Q2 2013 and has held it in 52 quarters since.
  • Mawer Investment Management's Aon position peaked at $1.85B in Q4 2021.
  • 1,253 funds tracked by Wall St. Rank held Aon as of Q1 2026.

Based on Mawer Investment Management's 13F filing for Q1 2026, filed 6 May 2026.