Latest Period
Q1 2026
Security Snapshot
IDEXX LABORATORIES INC /DE - Common Stock (IDXX) Institutional Ownership
CUSIP: 45168D104
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
1,309
Shares (Excl. Options)
71,551,975
Price
$561.89
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- Security type / class
- Equity / Common Stock
- Symbol
- IDXX on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 71,551,975
- Total 13F value
- $40,210,302,579
- Portfolio coverage rank
- 0.03%
- Share change
- -3,464,140
- Value change
- -$2,040,429,906
- Number of holders
- 1,309
- Shares outstanding
- 79,580,186
- SEC-reported price per share
- $526.44
- Insider filing price
- $526.44
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- IDXX - IDEXX LABORATORIES INC /DE - Common Stock is tracked under CUSIP 45168D104.
- 1309 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,309 to 173 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $40,210,302,579 to $728,993,203.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1309 institutions filings for Q1 2026.
Security key
45168D104
Latest holder period
Q1 2026
13F holders
1,309
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
IDXX full holder history
IDEXX LABORATORIES INC /DE SEC filings
IDEXX LABORATORIES INC /DE company facts
IDEXX LABORATORIES INC /DE insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 45168D104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
IDXX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.4% | $3,297,923,861 | 7,599,078 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 7.5% | $3,358,119,852 | 5,976,472 | Vanguard Capital Management | 31 Mar 2026 |
As of 31 Mar 2026, 1,309 institutional investors reported holding 71,551,975 shares of IDEXX LABORATORIES INC /DE - Common Stock (IDXX). This represents 90% of the company’s total 79,580,186 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
54%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11% | 8,365,553 | -2% | 0.08% | $4,700,520,591 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5% | 5,182,507 | 0% | 0.07% | $2,911,998,858 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.9% | 3,910,863 | 0% | 0.11% | $2,197,474,811 |
| STATE STREET CORP | 4.6% | 3,674,185 | +0.48% | 0.07% | $2,064,487,810 |
| GEODE CAPITAL MANAGEMENT, LLC | 3.3% | 2,660,999 | +3% | 0.09% | $1,497,768,297 |
| Invesco Ltd. | 2.1% | 1,671,121 | -6.8% | 0.12% | $938,986,179 |
| BAMCO INC /NY/ | 2.1% | 1,633,367 | -9.2% | 2.8% | $917,772,584 |
| Bank of New York Mellon Corp | 1.9% | 1,504,532 | -7.4% | 0.16% | $845,381,140 |
| Fundsmith LLP | 1.8% | 1,465,786 | -22% | 6.4% | $823,610,496 |
| MORGAN STANLEY | 1.7% | 1,315,954 | -15% | 0.04% | $739,423,426 |
| BLAIR WILLIAM & CO/IL | 1.2% | 946,336 | -5.5% | 1.5% | $531,736,581 |
| NORTHERN TRUST CORP | 1.1% | 911,893 | -1.2% | 0.07% | $512,383,559 |
| PRINCIPAL FINANCIAL GROUP INC | 1.1% | 881,189 | -9.1% | 0.26% | $495,164,014 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1.1% | 871,789 | +1.4% | 0.1% | $489,849,521 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.1% | 838,839 | +52% | 0.26% | $471,335,246 |
| Capital Research Global Investors | 0.98% | 781,345 | +29% | 0.07% | $439,007,277 |
| JPMORGAN CHASE & CO | 0.98% | 779,882 | +16% | 0.03% | $434,464,824 |
| WELLINGTON MANAGEMENT GROUP LLP | 0.92% | 735,475 | -5.6% | 0.08% | $413,256,047 |
| GOLDMAN SACHS GROUP INC | 0.9% | 716,921 | -14% | 0.05% | $402,830,921 |
| POLEN CAPITAL MANAGEMENT LLC | 0.87% | 695,811 | -28% | 2.7% | $390,969,243 |
| FRANKLIN RESOURCES INC | 0.83% | 662,633 | +5.7% | 0.09% | $372,326,527 |
| Legal & General Group Plc | 0.82% | 650,803 | -3% | 0.08% | $365,679,700 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.8% | 638,063 | -33% | 0.04% | $358,522,000 |
| Amundi | 0.77% | 610,779 | -1.3% | 0.09% | $343,190,612 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.77% | 610,217 | +3.4% | 0.05% | $342,874,830 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 1,383,972 | $728,993,203 | +$45,516,778 | $526.44 | 173 |
| 2026 Q1 | 71,551,975 | $40,210,302,579 | -$2,040,429,906 | $561.89 | 1,309 |
| 2025 Q4 | 75,208,804 | $51,721,905,948 | -$104,100,300 | $676.53 | 1,380 |
| 2025 Q3 | 72,156,674 | $46,076,126,465 | -$1,364,521,761 | $638.89 | 1,294 |
| 2025 Q2 | 74,492,454 | $39,944,909,126 | +$622,390,438 | $536.34 | 1,224 |
| 2025 Q1 | 73,764,672 | $30,958,486,481 | +$779,942,482 | $419.95 | 1,129 |
| 2024 Q4 | 71,835,659 | $29,724,021,447 | -$973,691,253 | $413.44 | 1,115 |
| 2024 Q3 | 72,771,836 | $36,698,542,671 | -$866,484,087 | $505.22 | 1,105 |
| 2024 Q2 | 74,742,498 | $36,407,539,797 | +$1,194,076,623 | $487.20 | 1,100 |
| 2024 Q1 | 72,528,628 | $39,086,467,213 | -$62,993,917 | $539.93 | 1,141 |
| 2023 Q4 | 72,729,572 | $40,349,913,998 | -$603,765,389 | $555.05 | 1,143 |
| 2023 Q3 | 74,019,658 | $32,363,649,715 | +$430,812,418 | $437.27 | 1,056 |
| 2023 Q2 | 73,042,621 | $36,667,385,940 | +$94,841,652 | $502.23 | 1,059 |
| 2023 Q1 | 72,713,915 | $36,334,265,012 | -$355,801,839 | $500.08 | 1,046 |
| 2022 Q4 | 73,497,514 | $30,011,391,318 | +$172,319,687 | $407.96 | 982 |
| 2022 Q3 | 73,626,131 | $24,002,744,883 | -$83,281,427 | $325.80 | 900 |
| 2022 Q2 | 73,767,652 | $25,881,144,178 | +$454,367,814 | $350.73 | 940 |
| 2022 Q1 | 72,572,264 | $39,690,896,632 | +$485,420,646 | $547.06 | 1,013 |
| 2021 Q4 | 71,508,034 | $47,013,671,922 | -$115,610,874 | $658.46 | 1,084 |
| 2021 Q3 | 71,564,445 | $44,507,146,691 | -$836,578,782 | $621.90 | 1,055 |
| 2021 Q2 | 72,890,084 | $46,029,916,801 | +$144,499,493 | $631.55 | 1,021 |
| 2021 Q1 | 72,631,314 | $35,536,251,001 | -$362,776,244 | $489.31 | 1,004 |
| 2020 Q4 | 73,683,435 | $36,820,146,126 | +$237,064,045 | $499.87 | 957 |
| 2020 Q3 | 73,270,641 | $28,787,297,170 | -$575,176,884 | $393.11 | 835 |
| 2020 Q2 | 74,703,783 | $24,698,206,219 | -$351,542,875 | $330.16 | 788 |