Henry Ellenbogen
Durable Capital Partners
Henry Ellenbogen IDEXX Laboratories Inc stake
total: 158
Durable Capital Partners IDXX trades
- Total transactions:
- 14
- New positions:
- 3
- Sold out:
- 3
- Added:
- 3
- Reduced:
- 5
- Held since:
- 2025 Q1
- Held for:
- 1 quarter
- Latest activity:
- 2025 Q2
According to 2026 Q2 report, Henry Ellenbogen doesn't hold any IDEXX Laboratories Inc (IDXX) shares. To date, the estimated cost basis is nearly $419.95 for "buy" trades and estimated average "sell" price is $419.95. Durable Capital Partners first purchased IDXX in 2020 Q1, initially acquiring 227,540 shares. Henry Ellenbogen later completely sold out the position and invested in IDEXX Laboratories Inc again in 2025 Q1. Since the initial investment in IDEXX Laboratories Inc (IDXX), Durable Capital Partners has made 13 more transactions.
When did Henry Ellenbogen sell IDEXX Laboratories Inc (IDXX)?
Henry Ellenbogen sold off the entire IDEXX Laboratories Inc (IDXX) position in 2025 Q2.
When did Henry Ellenbogen buy IDEXX Laboratories Inc (IDXX)?
Henry Ellenbogen first invested in IDEXX Laboratories Inc (IDXX) in 2020 Q1 at the reported quarter-end price of $242.24 per share.
What's the cost basis of Durable Capital Partners's IDXX stake?
The estimated cost basis for IDEXX Laboratories Inc (IDXX) stake is around $419.95 per share. This represents their average reported price* across all buy transactions
Estimated cost basis*
- Weighted AVG buy price:
- $419.95
- Weighted AVG sell price:
- $419.95
Henry Ellenbogen's historical trades in IDEXX Laboratories Inc
14 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2025 Q2
|
0.00%
|
0
|
$419.95
|
|
-100% (-364,757)
|
-1.37%
|
|
2025 Q1
|
1.37%
|
364,757
|
$419.95
|
$153,179,702
|
new
|
+1.37%
|
|
2023 Q1
|
0.00%
|
0
|
$407.96
|
|
-100% (-208,030)
|
-0.88%
|
|
2022 Q4
|
0.88%
|
208,030
|
$407.96
|
$84,867,919
|
+0.15% (+316)
|
+0%
|
|
2022 Q3
|
0.74%
|
207,714
|
$325.80
|
$67,673,000
|
+83.55% (+94,548)
|
+0.34%
|
|
2022 Q2
|
0.46%
|
113,166
|
$350.73
|
$39,691,000
|
new
|
+0.46%
|
|
2021 Q4
|
0.00%
|
0
|
$621.92
|
|
-100% (-25,402)
|
-0.12%
|
|
2021 Q3
|
0.12%
|
25,402
|
$621.92
|
$15,798,000
|
-78.70% (-93,859)
|
-0.43%
|
|
2021 Q2
|
0.56%
|
119,261
|
$631.55
|
$75,319,000
|
-3.00% (-3,689)
|
-0.02%
|
|
2021 Q1
|
0.51%
|
122,950
|
$489.31
|
$60,161,000
|
-38.51% (-76,996)
|
-0.33%
|
|
2020 Q4
|
0.89%
|
$499.87
|
-47.80% (-183,112)
|
|||
|
2020 Q3
|
1.66%
|
$393.11
|
-15.97% (-72,776)
|
|||
|
2020 Q2
|
1.87%
|
$330.16
|
+100.33% (+228,294)
|
|||
|
2020 Q1
|
1.12%
|
$242.24
|
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.