Greenhaven Associates AVTR trades
Edgar Wachenheim III
Edgar Wachenheim III Avantor Inc stake
total: 103
Trades details
- Total transactions:
- 5
- New positions:
- 1
- Added:
- 3
- Reduced:
- 1
- Held since:
- 2025 Q3
- Held for:
- 5 quarters
- Latest activity:
- 2026 Q3
According to 2026 Q3 report, Edgar Wachenheim III holds 24,359,610 Avantor Inc (AVTR) shares with a market value of roughly $366.61M accounting for 4.60% of the overall portfolio. To date, the estimated cost basis is nearly $11.78 for "buy" trades and estimated average "sell" price is $15.05. Greenhaven Associates first purchased AVTR in 2025 Q3, initially acquiring about 18.31M shares. Since the initial investment in Avantor Inc (AVTR), Greenhaven Associates has made 4 more transactions.
When did Edgar Wachenheim III buy Avantor Inc (AVTR)?
Edgar Wachenheim III first invested in Avantor Inc (AVTR) in 2025 Q3 at the reported quarter-end price of $12.48 per share.
What's the cost basis of Greenhaven Associates's AVTR stake?
The estimated cost basis for Avantor Inc (AVTR) stake is around $11.78 per share. This represents their average reported price* across all buy transactions
Estimated cost basis*
- Weighted AVG buy price:
- $11.78
- Weighted AVG sell price:
- $15.05
Edgar Wachenheim III's historical trades in Avantor Inc
5 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2026 Q3
|
4.60%
|
24,359,610
|
$15.05
|
$366,612,131
|
-1.13% (-277,700)
|
-0.05%
|
|
2026 Q2
|
2.82%
|
24,637,310
|
$9.90
|
$243,909,369
|
+9.04% (+2,043,472)
|
+0.23%
|
|
2026 Q1
|
2.92%
|
22,593,838
|
$7.84
|
$177,135,690
|
+10.21% (+2,093,185)
|
+0.27%
|
|
2025 Q4
|
3.81%
|
20,500,653
|
$11.46
|
$234,937,483
|
+11.95% (+2,189,083)
|
+0.41%
|
|
2025 Q3
|
3.48%
|
18,311,570
|
$12.48
|
$228,528,394
|
new
|
+3.48%
|
* 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.