AON
Aon PLC
Aon PLC historical holders
total: 18
Weitz Value Fund Aon PLC transactions over time
- Total transactions:
- 13
- New positions:
- 1
- Added:
- 7
- Reduced:
- 5
- Held since:
- 2019 Q3
- Held for:
- 27 quarters
- Latest activity:
- 2025 Q1
Wallace Weitz has been an institutional investor in Aon PLC (AON) since 2019 Q3. According to 2026 Q1 report, Wallace Weitz holds 85,000 shares with a market value of roughly $27.44M representing 4.37% of their equity portfolio. The fund/company first acquired AON in 2019 Q3, initially purchasing 130,000 shares. Since the initial investment, Weitz Value Fund has made 12 more transactions in this position.
Does Wallace Weitz still hold AON?
Yes, Wallace Weitz continues to hold Aon PLC (AON). According to their 2026 Q1 report, they maintain a position of 85,000 shares valued at approximately $27.44M, representing 4.37% of their equity portfolio.
When did Wallace Weitz first invest in AON?
Wallace Weitz first invested in Aon PLC (AON) in 2019 Q3 at the reported quarter-end price of $193.57 per share, acquiring 130,000 shares in their initial purchase.
What is Wallace Weitz's average cost basis for AON?
Based on historical transaction data, Wallace Weitz's estimated cost basis for Aon PLC (AON) is approximately $217.42 per share. This represents their average reported price* across all buy transactions.
Estimated cost basis*
- Weighted AVG buy price:
- $217.42
- Weighted AVG sell price:
- $326.61
AON transactions history by Weitz Value Fund
13 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2025 Q1
|
3.95%
|
85,000
|
$399.09
|
$33,922,650
|
-30.61% (-37,500)
|
-1.62%
|
|
2024 Q2
|
4.04%
|
122,500
|
$293.58
|
$35,963,550
|
+32.43% (+30,000)
|
+0.99%
|
|
2024 Q1
|
3.28%
|
92,500
|
$333.72
|
$30,869,100
|
+15.62% (+12,500)
|
+0.44%
|
|
2022 Q2
|
2.78%
|
80,000
|
$269.68
|
$21,574,400
|
-11.11% (-10,000)
|
-0.28%
|
|
2022 Q1
|
3.09%
|
90,000
|
$325.63
|
$29,306,700
|
-28.62% (-36,077)
|
-1.13%
|
|
2021 Q4
|
3.63%
|
126,077
|
$300.56
|
$37,893,703
|
-32.68% (-61,205)
|
-1.83%
|
|
2021 Q3
|
5.33%
|
187,282
|
$285.77
|
$53,519,577
|
-6.36% (-12,718)
|
-0.37%
|
|
2021 Q1
|
4.96%
|
200,000
|
$230.11
|
$46,022,000
|
+14.29% (+25,000)
|
+0.62%
|
|
2020 Q4
|
4.22%
|
$211.27
|
+9.38% (+15,000)
|
|||
|
2020 Q2
|
4.03%
|
$192.60
|
+6.67% (+10,000)
|
|||
|
2020 Q1
|
3.75%
|
$165.04
|
+7.14% (+10,000)
|
|||
|
2019 Q4
|
3.44%
|
$208.29
|
+7.69% (+10,000)
|
|||
|
2019 Q3
|
3.07%
|
$193.57
|
new
|
|||
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.