Idexx Laboratories Inc
Held by 15 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 45168D104 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide
In plain English: 15 of the investors we track own this stock. In the latest quarter, 8 of them bought more of it and 10 sold some or all of theirs (1 bought it for the first time). That tells you what they did last quarter — not what the stock will do next.
Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer
Managers holding
15
-3 vs last quarter (like-for-like)
Total value held
$2.05B
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.7%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
+$265.78M
+16.7% vs last quarter
Net shares bought
+696.1K
Est. net flow +$365.69M
Quarter activity
8 bought · 10 sold
1 new · 4 sold out
Tracked capital in this stock
Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).
Aggregate buying and selling
Net share change reported each quarter
Who owns IDXX?
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Who owns IDXX? — Q2 2026
Holders ranked by position size, with each one's quarter-over-quarter change.
Column filters
| # | Manager | Fund | Shares | Value ↑ | % of their portfolio | QoQ | Δ shares | Δ shares % | Est. Δ value ⓘChange in shares × this quarter's price |
|---|---|---|---|---|---|---|---|---|---|
| 15 | Bill Nygren | Harris Associates (Oakmark Funds) | 455 | $239.53K | 0.0% | Reduced | -27 | -5.6% | -$14.21K |
| 14 | Bridgeway | Bridgeway Capital Management | 860 | $452.74K | 0.0% | Reduced | -3.0K | -77.7% | -$1.58M |
| 13 | Two Sigma | Two Sigma Investments | 1.02K | $536.97K | 0.0% | Added | +79 | +8.4% | +$41.59K |
| 12 | Fred Alger | Fred Alger Management | 19.61K | $10.32M | 0.0% | Reduced | -4.7K | -19.2% | -$2.45M |
| 11 | Parnassus Investments | Parnassus Investments LLC | 29.39K | $15.47M | 0.0% | Reduced | -3.3K | -10.2% | -$1.75M |
| 10 | Ray Dalio | Bridgewater Associates | 33.53K | $17.65M | 0.1% | Added | +23.2K | +225.1% | +$12.22M |
| 9 | Ken Griffin | Citadel Advisors | 38.85K | $20.45M | 0.0% | Reduced | -48.7K | -55.6% | -$25.65M |
| 8 | Israel Englander | Millennium Management | 78.98K | $41.58M | 0.0% | Added | +8.5K | +12.1% | +$4.49M |
| 7 | Seilern | Seilern Investment Management | 97.56K | $51.36M | 6.5% | Added | +16.7K | +20.7% | +$8.81M |
| 6 | Jim Simons | Renaissance Technologies | 109.78K | $57.79M | 0.1% | Added | +61.3K | +126.3% | +$32.26M |
| 5 | Steve Cohen | Point72 Asset Management | 262.90K | $138.40M | 0.2% | Added | +133.6K | +103.4% | +$70.34M |
| 4 | Baillie Gifford | Baillie Gifford & Co | 353.80K | $186.25M | 0.2% | New | +353.8K | — | +$186.25M |
| 3 | Norges Bank | Norges Bank Investment Management | 353.94K | $186.33M | 0.0% | — | — | — | — |
| 2 | Polen Capital | Polen Capital Management | 532.38K | $280.27M | 2.4% | Reduced | -163.4K | -23.5% | -$86.03M |
| 1 | Ron Baron | Baron Capital (BAMCO) | 1.98M | $1.04B | 1.6% | Added | +343.4K | +21.0% | +$180.79M |
Column filters
| Manager | Fund | Shares sold | Value last quarter ↓ |
|---|---|---|---|
| Select Equity Group | Select Equity Group | -17.1K | $9.62M |
| Jeremy Grantham | GMO | -2.6K | $1.47M |
| David Shaw | D.E. Shaw & Co. | -1.1K | $603.47K |
| Ken Fisher | Fisher Asset Management | -599 | $337.08K |
Politician trades
Column filters
| Politician | Date | Ticker | Asset | Type | Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. | Est. size ⓘOur estimate only: the midpoint of the reported range. | Owner | Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. | Filed ↓ | Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Byron Donalds Politician | Sep 4, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Self | Moran Wealth IRA | Oct 7, 2025 | 33 days | PTR ↗ |
| Byron Donalds Politician | Sep 4, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | Moran Wealth IRA | Oct 7, 2025 | 33 days | PTR ↗ |
| Jefferson Shreve Politician | May 12, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Sale | $100,001 - $250,000 | Est. $175,000 (midpoint of reported range $100,001–$250,000) | Self | CRT - Standard Unit Trust | Jun 22, 2025 | 41 days | PTR ↗ |
| Robert P. Bresnahan, Jr. Politician | May 15, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Self | JP Morgan Brokerage Account | Jun 9, 2025 | 25 days | PTR ↗ |
| Jefferson Shreve Politician | Apr 7, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $50,001 - $100,000 | Est. $75,000 (midpoint of reported range $50,001–$100,000) | Self | CRT - Standard Unit Trust | May 8, 2025 | 31 days | PTR ↗ |
| Robert P. Bresnahan, Jr. Politician | Apr 8, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Self | JP Morgan Brokerage Account | Apr 28, 2025 | 20 days | PTR ↗ |
| Jefferson Shreve Politician | Mar 13, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Self | CRT - Standard Unit Trust | Apr 11, 2025 | 29 days | PTR ↗ |
| Robert P. Bresnahan, Jr. Politician | Feb 25, 2025 | IDXX | IDEXX Laboratories, Inc. - Common Stock (IDXX) [ST] | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Self | JP Morgan Brokerage Account | Mar 27, 2025 | 30 days | PTR ↗ |