Idexx Laboratories
IDXX
1,144 hedge funds and large institutions have $31.1B invested in Idexx Laboratories in 2025 Q1 according to their latest regulatory filings, with 122 funds opening new positions, 468 increasing their positions, 354 reducing their positions, and 90 closing their positions.
50% more funds holding in top 10
Funds holding in top 10: 12 → 18 (+6)
36% more first-time investments, than exits
New positions opened: 122 | Existing positions closed: 90
32% more repeat investments, than reductions
Existing positions increased: 468 | Existing positions reduced: 354
3.67% more ownership
Funds ownership: 87.82% → 91.49% (+3.7%)
2% more funds holding
Funds holding: 1,125 → 1,144 (+19)
5% more capital invested
Capital invested by funds: $29.8B → $31.1B (+$1.37B)
34% less call options, than puts
Call options by funds: $68.7M | Put options by funds: $105M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$359M |
| 2 |
Select Equity Group
New York
|
+$201M |
| 3 |
Principal Financial Group
Des Moines,
Iowa
|
+$180M |
| 4 |
DCP
Durable Capital Partners
Bethesda,
Maryland
|
+$158M |
| 5 |
UBS AM
Chicago,
Illinois
|
+$126M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AllianceBernstein
Nashville,
Tennessee
|
-$459M |
| 2 |
Norges Bank
Oslo,
Norway
|
-$282M |
| 3 |
Alyeska Investment Group
Chicago,
Illinois
|
-$156M |
| 4 |
Franklin Resources
San Mateo,
California
|
-$136M |
| 5 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$99.2M |
IDXX Hedge Fund Activity: Q1 2025 in Review
1,144 of the 7,471 institutional investors tracked by Wall St. Rank reported a position in Idexx Laboratories (IDXX) for Q1 2025, worth a combined $31.1B — up 4.6% from $29.8B a quarter earlier.
Buyers outnumbered sellers: 122 funds opened new IDXX positions and 90 closed out — a net gain of 32 holders — while 468 added to existing stakes and 354 trimmed.
The largest buyer was T. Rowe Price Associates, adding an estimated $359M. The largest seller was AllianceBernstein, cutting an estimated $459M.
- 1,144 institutional investors held Idexx Laboratories (IDXX) as of Q1 2025, up from 1,125 in Q4 2024.
- Funds reported $31.1B of Idexx Laboratories stock for Q1 2025, up 4.6% quarter-over-quarter.
- 122 funds opened new Idexx Laboratories positions in Q1 2025 and 90 closed out, a net change of +32 holders.
- The largest Idexx Laboratories buyer in Q1 2025 was T. Rowe Price Associates, an estimated $359M added.
- The largest Idexx Laboratories seller in Q1 2025 was AllianceBernstein, an estimated $459M sold.
Based on aggregated 13F filings for Q1 2025.