Idexx Laboratories
IDXX
1,300 hedge funds and large institutions have $39.1B invested in Idexx Laboratories in 2026 Q2 according to their latest regulatory filings, with 115 funds opening new positions, 474 increasing their positions, 507 reducing their positions, and 107 closing their positions.
103% more call options, than puts
Call options by funds: $57.6M | Put options by funds: $28.3M
1.94% more ownership
Funds ownership: 92.2% → 94.14% (+1.9%)
7% more first-time investments, than exits
New positions opened: 115 | Existing positions closed: 107
7% less repeat investments, than reductions
Existing positions increased: 474 | Existing positions reduced: 507
1% less funds holding
Funds holding: 1,318 → 1,300 (-18)
5% less capital invested
Capital invested by funds: $41.2B → $39.1B (-$2.09B)
19% less funds holding in top 10
Funds holding in top 10: 16 → 13 (-3)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$303M |
| 2 |
Baillie Gifford & Co
Edinburgh,
United Kingdom
|
+$198M |
| 3 |
BAMCO Inc
New York
|
+$193M |
| 4 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$189M |
| 5 |
Invesco
Atlanta,
Georgia
|
+$147M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital World Investors
Los Angeles,
California
|
-$280M |
| 2 |
Fundsmith LLP
London,
United Kingdom
|
-$250M |
| 3 |
Bank of New York Mellon
New York
|
-$175M |
| 4 |
RPI
Railway Pension Investments
London,
United Kingdom
|
-$118M |
| 5 |
Los Angeles Capital Management
Los Angeles,
California
|
-$118M |
IDXX Hedge Fund Activity: Q2 2026 in Review
1,300 of the 8,305 institutional investors tracked by Wall St. Rank reported a position in Idexx Laboratories (IDXX) for Q2 2026, worth a combined $39.1B — down 5.1% from $41.2B a quarter earlier.
Buyers outnumbered sellers: 115 funds opened new IDXX positions and 107 closed out — a net gain of 8 holders — while 474 added to existing stakes and 507 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $303M. The largest seller was Capital World Investors, exiting entirely with an estimated $280M sold.
- 1,300 institutional investors held Idexx Laboratories (IDXX) as of Q2 2026, down from 1,318 in Q1 2026.
- Funds reported $39.1B of Idexx Laboratories stock for Q2 2026, down 5.1% quarter-over-quarter.
- 115 funds opened new Idexx Laboratories positions in Q2 2026 and 107 closed out, a net change of +8 holders.
- The largest Idexx Laboratories buyer in Q2 2026 was Fidelity Investments, an estimated $303M added.
- The largest Idexx Laboratories seller in Q2 2026 was Capital World Investors, an estimated $280M sold.
Based on aggregated 13F filings for Q2 2026.