Robeco Institutional Asset Management
AON icon

Robeco Institutional Asset Management’s Aon AON Stock Holding History

Robeco Institutional Asset Management’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
2026
Q2 		$11.8M Sell
35,694
-16,914
-32% -$5.46M 0.01% 424
2026
Q1 		$17M Sell
52,608
-10,587
-17% -$3.52M 0.02% 358
2025
Q4 		$22.3M Buy
63,195
+6,721
+12% +$2.35M 0.03% 333
2025
Q3 		$20.1M Sell
56,474
-701
-1% -$254K 0.03% 356
2025
Q2 		$20.4M Buy
57,175
+3,067
+6% +$1.11M 0.03% 348
2025
Q1 		$21.6M Buy
54,108
+747
+1% +$286K 0.04% 315
2024
Q4 		$19.2M Buy
53,361
+961
+2% +$353K 0.04% 339
2024
Q3 		$18.1M Sell
52,400
-5,622
-10% -$1.84M 0.04% 355
2024
Q2 		$17M Sell
58,022
-17,225
-23% -$5.09M 0.04% 343
2024
Q1 		$25.1M Sell
75,247
-51,439
-41% -$15.9M 0.05% 308
2023
Q4 		$36.9M Buy
126,686
+56,795
+81% +$18.2M 0.09% 231
2023
Q3 		$22.7M Buy
69,891
+25,595
+58% +$8.47M 0.06% 293
2023
Q2 		$15.3M Buy
44,296
+10,044
+29% +$3.26M 0.04% 361
2023
Q1 		$10.8M Sell
34,252
-41
-0.1% -$12.7K 0.03% 424
2022
Q4 		$10.3M Sell
34,293
-11,584
-25% -$3.38M 0.03% 436
2022
Q3 		$12.3M Sell
45,877
-1,711
-4% -$484K 0.04% 355
2022
Q2 		$12.8M Buy
47,588
+23,104
+94% +$6.64M 0.04% 363
2022
Q1 		$7.97M Sell
24,484
-87,434
-78% -$25.4M 0.02% 478
2021
Q4 		$33.6M Sell
111,918
-236
-0.2% -$70.8K 0.07% 269
2021
Q3 		$32.1M Sell
112,154
-51,985
-32% -$14M 0.07% 281
2021
Q2 		$39.2M Buy
164,139
+8,430
+5% +$2.06M 0.09% 245
2021
Q1 		$35.8M Sell
155,709
-3,558
-2% -$783K 0.09% 248
2020
Q4 		$33.6M Sell
159,267
-7,843
-5% -$1.6M 0.09% 242
2020
Q3 		$34.5M Buy
167,110
+4,690
+3% +$937K 0.11% 200
2020
Q2 		$31.3M Sell
162,420
-89,888
-36% -$16.8M 0.11% 215
2020
Q1 		$41.6M Buy
252,308
+26,144
+12% +$5.35M 0.17% 157
2019
Q4 		$47.1M Buy
226,164
+21,367
+10% +$4.23M 0.15% 185
2019
Q3 		$39.6M Sell
204,797
-26,602
-11% -$5.13M 0.14% 197
2019
Q2 		$44.7M Sell
231,399
-23,521
-9% -$4.26M 0.16% 182
2019
Q1 		$43.5M Buy
254,920
+8,617
+3% +$1.4M 0.16% 182
2018
Q4 		$35.8M Buy
246,303
+41,822
+20% +$6.5M 0.16% 185
2018
Q3 		$31.4M Sell
204,481
-619
-0.3% -$90.5K 0.12% 219
2018
Q2 		$28.1M Sell
205,100
-3,147
-2% -$443K 0.13% 207
2018
Q1 		$29.2M Buy
208,247
+45,188
+28% +$6.33M 0.14% 197
2017
Q4 		$21.8M Buy
163,059
+147,746
+965% +$21M 0.11% 227
2017
Q3 		$2.24M Buy
15,313
+82
+0.5% +$11.4K 0.01% 562
2017
Q2 		$2.02M Sell
15,231
-1,430
-9% -$181K 0.01% 585
2017
Q1 		$1.98M Sell
16,661
-1,917
-10% -$221K 0.01% 582
2016
Q4 		$2.07M Sell
18,578
-2,928
-14% -$326K 0.02% 501
2016
Q3 		$2.42M Buy
21,506
+9,244
+75% +$1.02M 0.02% 487
2016
Q2 		$1.34M Hold
12,262
– – 0.01% 567
2016
Q1 		$1.28M Hold
12,262
– – 0.01% 567
2015
Q4 		$1.13M Sell
12,262
-229,239
-95% -$21.4M 0.01% 578
2015
Q3 		$21.4M Buy
241,501
+6,090
+3% +$590K 0.16% 172
2015
Q2 		$23.5M Buy
235,411
+5,079
+2% +$508K 0.18% 164
2015
Q1 		$22.1M Sell
230,332
-28,996
-11% -$2.81M 0.17% 176
2014
Q4 		$24.6M Buy
259,328
+223,585
+626% +$20M 0.18% 152
2014
Q3 		$3.13M Sell
35,743
-3,364
-9% -$294K 0.02% 385
2014
Q2 		$3.52M Buy
39,107
+15,570
+66% +$1.35M 0.03% 358
2014
Q1 		$1.98M Buy
23,537
+195
+0.8% +$16.2K 0.02% 405
2013
Q4 		$1.96M Hold
23,342
– – 0.02% 369
2013
Q3 		$1.74M Sell
23,342
-889
-4% -$61K 0.02% 391
2013
Q2 		$1.56M Buy
+24,231
New +$1.54M 0.02% 395

Other funds holding AON

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $180B AUM 37.51% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
VAM
Veritas Asset Management London, United Kingdom $5.56B AUM 3.46% 1-Year Est. Return
Mawer Investment Management
Mawer Investment Management Calgary, Alberta, Canada $14.7B AUM 12.5% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $12.5B AUM 7.49% 1-Year Est. Return
CGI
Comgest Global Investors Paris, France $4.55B AUM 11.62% 1-Year Est. Return

Robeco Institutional Asset Management's AON Position: Q2 2026 in Review

Robeco Institutional Asset Management reduced its Aon (AON) stake by 32% in Q2 2026, selling an estimated $5.46M and leaving 35,694 shares worth $11.8M. The position accounts for 0.01% of the portfolio, ranked #424.

Robeco Institutional Asset Management first reported a position in AON in Q2 2013 and has held it in 53 quarters since. The position peaked at $47.1M in Q4 2019. 715 funds tracked by Wall St. Rank hold AON as of Q2 2026.

  • Robeco Institutional Asset Management held 35,694 shares of Aon worth $11.8M as of Q2 2026.
  • Robeco Institutional Asset Management sold 16,914 Aon shares in Q2 2026, an estimated $5.46M.
  • Aon made up 0.01% of Robeco Institutional Asset Management's portfolio in Q2 2026, its #424 holding.
  • Robeco Institutional Asset Management first reported a position in Aon in Q2 2013 and has held it in 53 quarters since.
  • Robeco Institutional Asset Management's Aon position peaked at $47.1M in Q4 2019.
  • 715 funds tracked by Wall St. Rank held Aon as of Q2 2026.

Based on Robeco Institutional Asset Management's 13F filing for Q2 2026, filed 21 Jul 2026.