AON
Aon PLC
Aon PLC historical holders
total: 18
Baupost Group Aon PLC transactions over time
- Total transactions:
- 1
- New positions:
- 1
- Held since:
- 2026 Q1
- Held for:
- 1 quarter
- Latest activity:
- 2026 Q1
Seth Klarman has been an institutional investor in Aon PLC (AON) since 2026 Q1. According to 2026 Q1 report, Seth Klarman holds 769,000 shares with a market value of roughly $248.22M representing 4.85% of their equity portfolio. The fund/company first acquired AON in 2026 Q1, initially purchasing 769,000 shares.
Does Seth Klarman still hold AON?
Yes, Seth Klarman continues to hold Aon PLC (AON). According to their 2026 Q1 report, they maintain a position of 769,000 shares valued at approximately $248.22M, representing 4.85% of their equity portfolio.
When did Seth Klarman first invest in AON?
Seth Klarman first invested in Aon PLC (AON) in 2026 Q1 at the reported quarter-end price of $322.78 per share, acquiring 769,000 shares in their initial purchase.
What is Seth Klarman's average cost basis for AON?
Based on historical transaction data, Seth Klarman's estimated cost basis for Aon PLC (AON) is approximately $322.78 per share. This represents their average reported price* across all buy transactions.
Estimated cost basis*
- Weighted AVG buy price:
- $322.78
AON transactions history by Baupost Group
1 result
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2026 Q1
|
4.85%
|
769,000
|
$322.78
|
$248,218,000
|
new
|
+4.85%
|
* 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.