Terry Smith's IDXX Position Overview
Terry Smith (via Fundsmith Llp) currently holds 1.88 M shares of IDEXX Laboratories, Inc. (IDXX) worth $1.27 B, representing 7.42% of the portfolio. First purchased in 2015-Q1, this long-term strategic position has been held for 44 quarters.
Based on 13F filings since 2013, Terry Smith has maintained a long-term strategic position in IDXX, representing a significant commitment to this investment thesis. Largest addition occurred in Q3 2017, adding 14.05 M shares. Largest reduction occurred in Q4 2017, reducing 14.09 M shares.
Analysis based on 13F filings available since 2013 Q2
Terry Smith's IDEXX Laboratories (IDXX) Holding Value Over Time
Track share changes against reported price movement
Quarterly IDEXX Laboratories (IDXX) Trades by Terry Smith
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -734,422 | Reduce 28.13% | 1.88 M | $676.53 |
| Q3 2025 | -28,832 | Reduce 1.09% | 2.61 M | $638.89 |
| Q2 2025 | -9,042 | Reduce 0.34% | 2.64 M | $536.34 |
| Q1 2025 | -14,524 | Reduce 0.55% | 2.65 M | $419.95 |
| Q4 2024 | -1,307 | Reduce 0.05% | 2.66 M | $413.44 |
| Q3 2024 | +970 | Add 0.04% | 2.66 M | $505.22 |
| Q2 2024 | -51,570 | Reduce 1.90% | 2.66 M | $487.20 |
| Q1 2024 | -14,155 | Reduce 0.52% | 2.71 M | $539.93 |
| Q4 2023 | -235,637 | Reduce 7.95% | 2.73 M | $555.05 |
| Q3 2023 | +3,003 | Add 0.10% | 2.96 M | $437.27 |
| Q2 2023 | +7,355 | Add 0.25% | 2.96 M | $502.23 |
| Q1 2023 | -489,536 | Reduce 14.22% | 2.95 M | $500.08 |
| Q4 2022 | -177,045 | Reduce 4.89% | 3.44 M | $407.96 |
| Q3 2022 | +1,902 | Add 0.05% | 3.62 M | $325.80 |
| Q2 2022 | +813 | Add 0.02% | 3.62 M | $350.73 |
| Q1 2022 | -624,221 | Reduce 14.71% | 3.62 M | $547.06 |
| Q4 2021 | +81 | Add 0.00% | 4.24 M | $658.46 |
| Q3 2021 | -260 | Reduce 0.01% | 4.24 M | $621.90 |
| Q2 2021 | +21,850 | Add 0.52% | 4.24 M | $631.55 |
| Q1 2021 | -5,816 | Reduce 0.14% | 4.22 M | $489.31 |
| Q4 2020 | -6,387 | Reduce 0.15% | 4.23 M | $499.87 |
| Q3 2020 | -7,896 | Reduce 0.19% | 4.23 M | $393.11 |
| Q2 2020 | -4,516 | Reduce 0.11% | 4.24 M | $330.16 |
| Q1 2020 | -346,672 | Reduce 7.55% | 4.25 M | $242.24 |
| Q4 2019 | +35,883 | Add 0.79% | 4.59 M | $261.13 |
| Q3 2019 | +85,978 | Add 1.92% | 4.56 M | $271.93 |
| Q2 2019 | +2,697 | Add 0.06% | 4.47 M | $275.33 |
| Q1 2019 | +35,049 | Add 0.79% | 4.47 M | $223.60 |
| Q4 2018 | +5,649 | Add 0.13% | 4.43 M | $249.66 |
| Q3 2018 | -2,461 | Reduce 0.06% | 4.43 M | $249.66 |
| Q2 2018 | +1,447 | Add 0.03% | 4.43 M | $217.94 |
| Q1 2018 | +22,901 | Add 0.52% | 4.43 M | $191.39 |
| Q4 2017 | -14.09 M | Reduce 76.18% | 4.4 M | $156.38 |
| Q3 2017 | +14.05 M | Add 315.94% | 18.49 M | $85.66 |
| Q2 2017 | -34,167 | Reduce 0.76% | 4.45 M | $161.42 |
| Q1 2017 | +3,341 | Add 0.07% | 4.48 M | $154.61 |
| Q4 2016 | -14,017 | Reduce 0.31% | 4.48 M | $118.08 |
| Q3 2016 | +21,547 | Add 0.48% | 4.49 M | $112.73 |
| Q2 2016 | +258,657 | Add 6.14% | 4.47 M | $92.86 |
| Q1 2016 | +1.72 M | Add 69.02% | 4.21 M | $78.32 |
| Q4 2015 | +1.61 M | Add 182.93% | 2.49 M | $72.92 |
| Q3 2015 | +813,646 | Add 1217.30% | 880,486 | $74.25 |
| Q2 2015 | +15,854 | Add 31.09% | 66,840 | $64.14 |
| Q1 2015 | +50,986 | New Buy | 50,986 | $77.24 |
Terry Smith's IDEXX Laboratories Investment FAQs
Terry Smith first purchased IDEXX Laboratories, Inc. (IDXX) in Q1 2015, acquiring 50,986 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Terry Smith has held IDEXX Laboratories, Inc. (IDXX) for 44 quarters since Q1 2015.
Terry Smith's largest addition to IDEXX Laboratories, Inc. (IDXX) was in Q3 2017, adding 18,492,918 shares worth $1.58 B.
According to the latest 13F filing for Q4 2025, Terry Smith's firm, Fundsmith Llp, owns 1,876,035 shares of IDEXX Laboratories, Inc. (IDXX), valued at approximately $1.27 B.
As of the Q4 2025 filing, IDEXX Laboratories, Inc. (IDXX) represents approximately 7.42% of Terry Smith's publicly disclosed stock portfolio, making it one of their key holdings.
Terry Smith's peak holding in IDEXX Laboratories, Inc. (IDXX) was 18,492,918 shares, as reported at the end of Q3 2017.