IDXX IDEXX Laboratories, Inc.

NASDAQ
$509.56

IDEXX Laboratories, Inc. (IDXX) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+22.73
27 buyers / 17 sellers
BUYING
Funds compared
44
funds with comparable IDXX positions
36 current holders · 35 prior-quarter holders
Net share change
+773.5K
+1.00M added, -226.6K cut
Position activity
9 new 18 increased 9 reduced 8 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Farallon Capital Management Event Value New +9.0K — $4.7M 0.0% 62
Point72 Asset Management, L.P. Increased +133.6K +103.4% $70.3M 0.2% 60
Alyeska Investment Group, L.P. Increased +197.8K +97.3% $104.1M 0.6% 60
Select Equity Group Long/Short Growth Sold Out -17.1K -100.0% $9.0M 0.0% 60
Bridgewater Associates Quant Macro Increased +23.2K +225.1% $12.2M 0.1% 59
Trexquant Investment Quant New +123.4K — $65.0M 0.4% 59
Squarepoint Ops LLC Quant Increased +214.9K +214.2% $113.1M 0.4% 58
D. E. Shaw & Co., Inc. Quant Sold Out -1.1K -100.0% $565.4K 0.0% 58
RENAISSANCE TECHNOLOGIES LLC Quant Increased +61.3K +126.3% $32.3M 0.1% 57
Tudor Investment Corporation Macro Sold Out -8.3K -100.0% $4.4M 0.0% 56

Most significant buyers

By move score, not size.

  • Farallon Capital Management New · +9.0K
  • Point72 Asset Management, L.P. Increased · +133.6K
  • Alyeska Investment Group, L.P. Increased · +197.8K
  • Bridgewater Associates Increased · +23.2K
  • Trexquant Investment New · +123.4K

Most significant sellers

By move score, not size.

  • Select Equity Group Sold Out · -17.1K
  • D. E. Shaw & Co., Inc. Sold Out · -1.1K
  • Tudor Investment Corporation Sold Out · -8.3K
  • Capula Management Sold Out · -111
  • Verition Fund Management Sold Out · -483

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Farallon Capital Management 1 9.0K 0 +9.0K — 0.0% New 62
Point72 Asset Management, L.P. 1 262.9K 129.3K +133.6K +103.4% 0.2% Increased 60
Alyeska Investment Group, L.P. 2 401.1K 203.3K +197.8K +97.3% 0.6% Increased 60
Select Equity Group 1 0 17.1K -17.1K -100.0% 0.0% Sold Out 60
Bridgewater Associates 1 33.5K 10.3K +23.2K +225.1% 0.1% Increased 59
Trexquant Investment 3 123.4K 0 +123.4K — 0.4% New 59
Squarepoint Ops LLC 2 315.2K 100.3K +214.9K +214.2% 0.4% Increased 58
D. E. Shaw & Co., Inc. 1 0 1.1K -1.1K -100.0% 0.0% Sold Out 58
RENAISSANCE TECHNOLOGIES LLC 1 109.8K 48.5K +61.3K +126.3% 0.1% Increased 57
Tudor Investment Corporation 2 0 8.3K -8.3K -100.0% 0.0% Sold Out 56
Capula Management 2 0 111 -111 -100.0% 0.0% Sold Out 56
LMR Partners 3 5.1K 0 +5.1K — 0.0% New 55
ExodusPoint Capital Management 3 13.0K 0 +13.0K — 0.1% New 55
Verition Fund Management 2 0 483 -483 -100.0% 0.0% Sold Out 54
Hudson Bay Capital Management 3 680 0 +680 — 0.0% New 53
Edgestream Partners 4 0 16.5K -16.5K -100.0% 0.0% Sold Out 52
Brevan Howard Capital Management 3 10.6K 0 +10.6K — 0.1% New 52
MARSHALL WACE, LLP 2 93.1K 49.3K +43.8K +88.9% 0.1% Increased 52
Walleye Capital 3 0 170 -170 -100.0% 0.0% Sold Out 51
Boothbay Fund Management 4 2.6K 0 +2.6K — 0.0% New 51
Winton Group 4 0 2.1K -2.1K -100.0% 0.0% Sold Out 50
Aquatic Capital Management 4 2.6K 0 +2.6K — 0.0% New 50
Woodline Partners LP 2 17.1K 1.5K +15.6K +1072.9% 0.0% Increased 50
Quantbot Technologies 4 9.6K 0 +9.6K — 0.2% New 48
Voleon Capital Management 3 11.0K 2.3K +8.7K +379.6% 0.1% Increased 47
Qube Research & Technologies Ltd 2 148.4K 85.7K +62.7K +73.3% 0.1% Increased 47
WORLDQUANT MILLENNIUM ADVISORS LLC 2 37.0K 98.4K -61.3K -62.3% 0.1% Reduced 45
CITADEL ADVISORS LLC 1 38.8K 87.6K -48.7K -55.6% 0.0% Reduced 45
Engineers Gate 4 5.2K 2.0K +3.2K +162.6% 0.0% Increased 44
Gotham Asset Management, LLC 2 47.2K 80.5K -33.3K -41.4% 0.1% Reduced 39
Balyasny Asset Management L.P. 2 1.8K 1.3K +500 +38.2% 0.0% Increased 36
Man Group 3 51.4K 34.5K +16.9K +48.8% 0.1% Increased 35
Schonfeld Strategic Advisors 3 7.7K 15.0K -7.3K -48.5% 0.0% Reduced 34
Holocene Advisors, LP 2 175.6K 147.7K +27.8K +18.8% 0.2% Increased 34
MILLENNIUM MANAGEMENT LLC 2 79.0K 70.4K +8.5K +12.1% 0.0% Increased 31
Tremblant Capital Group 2 63.4K 64.5K -1.1K -1.7% 1.0% Reduced 31
Capital Fund Management 3 33.8K 42.9K -9.1K -21.2% 0.1% Reduced 30
AQR Capital Management 3 77.2K 96.7K -19.5K -20.2% 0.0% Reduced 29
TWO SIGMA INVESTMENTS, LP 2 1.0K 941 +79 +8.4% 0.0% Increased 28
ADAGE CAPITAL PARTNERS GP, L.L.C. 2 70.3K 68.3K +2.0K +2.9% 0.1% Increased 28
Magnetar Capital 2 1.8K 1.7K +187 +11.3% 0.0% Increased 26
Y-Intercept 4 16.3K 13.7K +2.7K +19.5% 0.2% Increased 25
Chilton Investment Company 2 14.9K 15.0K -165 -1.1% 0.2% Reduced 25
Graham Capital Management 3 879 1.2K -292 -24.9% 0.0% Reduced 25

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.