WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC - AON PLC ownership

AON PLC's ticker is AON and the CUSIP is G0403H108. A total of 829 filers reported holding AON PLC in Q4 2020. The put-call ratio across all filers is 0.39 and the average weighting 0.4%.

Quarter-by-quarter ownership
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC ownership history of AON PLC
ValueSharesWeighting
Q3 2023$5,576,950
-12.0%
17,201
-6.4%
0.02%
-5.0%
Q2 2023$6,340,979
+7.3%
18,369
-2.0%
0.02%
-4.8%
Q1 2023$5,909,165
+2.8%
18,742
-2.2%
0.02%
-4.5%
Q4 2022$5,750,082
-9.1%
19,158
-18.9%
0.02%
-12.0%
Q3 2022$6,325,000
+1.6%
23,613
+2.3%
0.02%
+8.7%
Q2 2022$6,223,000
-21.7%
23,075
-5.5%
0.02%
-4.2%
Q1 2022$7,948,000
-12.0%
24,408
-18.8%
0.02%0.0%
Q4 2021$9,036,000
-30.2%
30,064
-33.6%
0.02%
-35.1%
Q3 2021$12,947,000
+5.1%
45,305
-12.2%
0.04%
-5.1%
Q2 2021$12,315,000
+8.7%
51,579
+4.8%
0.04%
+5.4%
Q1 2021$11,328,000
+5.7%
49,228
-2.9%
0.04%
+2.8%
Q4 2020$10,716,000
+11.1%
50,723
+8.5%
0.04%
-5.3%
Q3 2020$9,643,000
-78.2%
46,743
-79.6%
0.04%
-78.9%
Q2 2020$44,172,000229,3460.18%
Other shareholders
AON PLC shareholders Q4 2020
NameSharesValueWeighting ↓
Night Owl Capital Management, LLC 168,092$50,522,00010.27%
LFL Advisers, LLC 78,000$23,444,0009.68%
Broad Run Investment Management 500,317$150,375,0009.30%
Mawer Investment Management Ltd. 6,156,600$1,850,428,0008.33%
Capital Bank & Trust Co 801$241,0007.66%
BloombergSen Inc. 537,945$161,679,0007.65%
DUDLEY & SHANLEY, INC. 119,163$35,816,0006.20%
Bowie Capital Management, LLC 165,650$49,788,0005.76%
Bishop Rock Capital, L.P. 62,413$18,759,0005.60%
Independent Franchise Partners LLP 2,323,854$698,457,0005.50%
View complete list of AON PLC shareholders