IDXX
Idexx Laboratories Inc /DeCompany with tickers: IDXX
CIK
874716
CUSIP
45168D104
Shares Outstanding
78,882,997
Website
https://www.idexx.com
Investor Relations
https://ir.idexx.com/
13F Activity (30d)
34 filings
10 filers
Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this stock, matched by the stock's CUSIP. Each row is one fund position with its size, value and weight in that fund.
Funds holding IDXX
731 fund positions| Fund | Ticker | Balance | Value | % of Fund | Side | Reported | Open |
|---|---|---|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND | — | 2,527,800 | $1,420,345,542 | 0.07% | Long | 2026-03-31 | |
| VANGUARD 500 INDEX FUND | — | 2,030,133 | $1,140,711,431 | 0.08% | Long | 2026-03-31 | |
| VANGUARD MID-CAP INDEX FUND | — | 1,719,572 | $966,210,311 | 0.49% | Long | 2026-03-31 | |
| Invesco QQQ Trust, Series 1 | QQQ | 1,677,361 | $942,492,372 | 0.25% | Long | 2026-03-31 | |
| Fidelity 500 Index Fund | — | 1,016,204 | $667,371,653 | 0.09% | Long | 2026-02-28 | |
| iShares Core S&P 500 ETF | — | 1,027,534 | $577,361,079 | 0.08% | Long | 2026-03-31 | |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | SPY | 929,957 | $522,533,539 | 0.08% | Long | 2026-03-31 | |
| VANGUARD GROWTH INDEX FUND | — | 927,080 | $520,916,981 | 0.16% | Long | 2026-03-31 | |
| AMCAP Fund | — | 732,861 | $481,291,805 | 0.51% | Long | 2026-02-28 | |
| Baron Partners Fund | — | 620,000 | $348,371,800 | 3.36% | Long | 2026-03-31 | |
| VANGUARD MID-CAP GROWTH INDEX FUND | — | 605,627 | $340,295,755 | 1.16% | Long | 2026-03-31 | |
| State Street(R) Health Care Select Sector SPDR(R) ETF | — | 581,073 | $326,499,108 | 0.85% | Long | 2026-03-31 | |
| iShares Russell Mid-Cap Growth ETF | — | 534,598 | $300,385,270 | 1.61% | Long | 2026-03-31 | |
| VANGUARD INSTITUTIONAL INDEX FUND | — | 450,237 | $252,983,668 | 0.08% | Long | 2026-03-31 | |
| VANGUARD U.S. GROWTH FUND | — | 311,865 | $204,811,101 | 0.47% | Long | 2026-02-28 | |
| BlackRock Mid-Cap Growth Equity Portfolio | — | 308,714 | $202,741,745 | 3.43% | Long | 2026-02-27 | |
| Invesco NASDAQ 100 ETF | — | 303,679 | $199,435,110 | 0.28% | Long | 2026-02-28 | |
| iShares Russell 1000 Growth ETF | — | 321,242 | $180,502,667 | 0.16% | Long | 2026-03-31 | |
| iShares Russell Mid-Cap ETF | — | 304,554 | $171,125,847 | 0.35% | Long | 2026-03-31 | |
| VANGUARD HEALTH CARE INDEX FUND | — | 240,318 | $157,824,040 | 0.78% | Long | 2026-02-28 | |
| BARON ASSET FUND | — | 269,176 | $151,247,303 | 4.56% | Long | 2026-03-31 | |
| iShares U.S. Medical Devices ETF | — | 250,804 | $140,924,260 | 4.44% | Long | 2026-03-31 | |
| JPMorgan Mid Cap Growth Fund | — | 239,371 | $134,500,171 | 1.18% | Long | 2026-03-31 | |
| Baron Focused Growth Fund | — | 238,900 | $134,235,521 | 3.48% | Long | 2026-03-31 | |
| Nomura Mid Cap Growth Fund | — | 204,894 | $115,127,890 | 3.84% | Long | 2026-03-31 | |
| T. Rowe Price All-Cap Opportunities Fund | — | 203,808 | $114,517,677 | 0.80% | Long | 2026-03-31 | |
| BARON GROWTH FUND | — | 200,000 | $112,378,000 | 4.30% | Long | 2026-03-31 | |
| Schwab U.S. Large-Cap Growth ETF | — | 153,087 | $100,536,826 | 0.20% | Long | 2026-02-28 | |
| Fidelity Total Market Index Fund | — | 149,297 | $98,047,819 | 0.08% | Long | 2026-02-28 | |
| iShares S&P 500 Growth ETF | — | 167,796 | $94,282,894 | 0.15% | Long | 2026-03-31 | |
| State Street(R) SPDR(R) Portfolio S&P 500(R) ETF | — | 167,768 | $94,267,162 | 0.08% | Long | 2026-03-31 | |
| VANGUARD RUSSELL 1000 GROWTH INDEX FUND | — | 131,070 | $86,077,601 | 0.18% | Long | 2026-02-28 | |
| Carillon Eagle Mid Cap Growth Fund | — | 140,990 | $79,220,871 | 1.66% | Long | 2026-03-31 | |
| Calvert Equity Fund | — | 140,669 | $79,040,504 | 2.08% | Long | 2026-03-31 | |
| Fidelity Series Total Market Index Fund | — | 118,117 | $77,570,977 | 0.08% | Long | 2026-02-28 | |
| T. Rowe Price Diversified Mid-Cap Growth Fund, Inc. | — | 123,800 | $69,561,982 | 1.63% | Long | 2026-03-31 | |
| ClearBridge Growth Fund | — | 104,800 | $68,825,304 | 1.64% | Long | 2026-02-27 | |
| First Trust Water ETF | — | 119,181 | $66,966,612 | 3.76% | Long | 2026-03-31 | |
| Federated Hermes MDT Mid Cap Growth Fund | — | 115,168 | $64,586,214 | 1.01% | Long | 2026-04-30 | |
| State Street(R) SPDR(R) Portfolio S&P 500(R) Growth ETF | — | 114,670 | $64,431,926 | 0.15% | Long | 2026-03-31 | |
| iShares Core S&P Total U.S. Stock Market ETF | — | 100,394 | $56,410,385 | 0.07% | Long | 2026-03-31 | |
| Franklin Dynatech Fund | — | 100,000 | $56,189,000 | 0.23% | Long | 2026-03-31 | |
| Fidelity Mid Cap Growth Index Fund | — | 97,312 | $54,678,640 | 1.61% | Long | 2026-03-31 | |
| Nomura Large Cap Growth Fund | — | 96,815 | $54,399,380 | 0.93% | Long | 2026-03-31 | |
| Schwab U.S. Large-Cap ETF | — | 82,312 | $54,056,760 | 0.08% | Long | 2026-02-28 | |
| VANGUARD LARGE-CAP INDEX FUND | — | 93,475 | $52,522,668 | 0.08% | Long | 2026-03-31 | |
| College Retirement Equities Fund - Responsible Balanced Account | — | 92,240 | $51,828,734 | 0.25% | Long | 2026-03-31 | |
| Neuberger Mid Cap Growth Fund | — | 77,272 | $50,746,841 | 2.55% | Long | 2026-02-28 | |
| Goldman Sachs ActiveBeta(R) U.S. Large Cap Equity ETF | — | 76,634 | $50,327,847 | 0.34% | Long | 2026-02-28 | |
| BlackRock Health Sciences Opportunities Portfolio | — | 74,621 | $49,005,849 | 0.75% | Long | 2026-02-27 |
Showing 1–50 of 731 positions