Terry Smith's IDXX Position Overview
Terry Smith (via Fundsmith Llp) currently holds 2.6M shares of IDEXX Laboratories, Inc. (IDXX) worth $1.67 B, representing 8.43% of the portfolio. First purchased in 2015-Q1, this long-term strategic position has been held for 43 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 14.0M shares. Largest reduction occurred in Q4 2017, reducing 14.1M 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
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2015 | +50,986 | New Buy | 50,986 | $77.24 |
| Q2 2015 | +15,854 | Add 31.09% | 66,840 | $64.14 |
| Q3 2015 | +813,646 | Add 1217.30% | 880,486 | $74.25 |
| Q4 2015 | +1.61 M | Add 182.93% | 2.49 M | $72.92 |
| Q1 2016 | +1.72 M | Add 69.02% | 4.21 M | $78.32 |
| Q2 2016 | +258,657 | Add 6.14% | 4.47 M | $92.86 |
| Q3 2016 | +21,547 | Add 0.48% | 4.49 M | $112.73 |
| Q4 2016 | -14,017 | Reduce 0.31% | 4.48 M | $118.08 |
| Q1 2017 | +3,341 | Add 0.07% | 4.48 M | $154.61 |
| Q2 2017 | -34,167 | Reduce 0.76% | 4.45 M | $161.42 |
| Q3 2017 | +14.05 M | Add 315.94% | 18.49 M | $85.66 |
| Q4 2017 | -14.09 M | Reduce 76.18% | 4.4 M | $156.38 |
| Q1 2018 | +22,901 | Add 0.52% | 4.43 M | $191.39 |
| Q2 2018 | +1,447 | Add 0.03% | 4.43 M | $217.94 |
| Q3 2018 | -2,461 | Reduce 0.06% | 4.43 M | $249.66 |
| Q4 2018 | +5,649 | Add 0.13% | 4.43 M | $249.66 |
| Q1 2019 | +35,049 | Add 0.79% | 4.47 M | $223.60 |
| Q2 2019 | +2,697 | Add 0.06% | 4.47 M | $275.33 |
| Q3 2019 | +85,978 | Add 1.92% | 4.56 M | $271.93 |
| Q4 2019 | +35,883 | Add 0.79% | 4.59 M | $261.13 |
| Q1 2020 | -346,672 | Reduce 7.55% | 4.25 M | $242.24 |
| Q2 2020 | -4,516 | Reduce 0.11% | 4.24 M | $330.16 |
| Q3 2020 | -7,896 | Reduce 0.19% | 4.23 M | $393.11 |
| Q4 2020 | -6,387 | Reduce 0.15% | 4.23 M | $499.87 |
| Q1 2021 | -5,816 | Reduce 0.14% | 4.22 M | $489.31 |
| Q2 2021 | +21,850 | Add 0.52% | 4.24 M | $631.55 |
| Q3 2021 | -260 | Reduce 0.01% | 4.24 M | $621.90 |
| Q4 2021 | +81 | Add 0.00% | 4.24 M | $658.46 |
| Q1 2022 | -624,221 | Reduce 14.71% | 3.62 M | $547.06 |
| Q2 2022 | +813 | Add 0.02% | 3.62 M | $350.73 |
| Q3 2022 | +1,902 | Add 0.05% | 3.62 M | $325.80 |
| Q4 2022 | -177,045 | Reduce 4.89% | 3.44 M | $407.96 |
| Q1 2023 | -489,536 | Reduce 14.22% | 2.95 M | $500.08 |
| Q2 2023 | +7,355 | Add 0.25% | 2.96 M | $502.23 |
| Q3 2023 | +3,003 | Add 0.10% | 2.96 M | $437.27 |
| Q4 2023 | -235,637 | Reduce 7.95% | 2.73 M | $555.05 |
| Q1 2024 | -14,155 | Reduce 0.52% | 2.71 M | $539.93 |
| Q2 2024 | -51,570 | Reduce 1.90% | 2.66 M | $487.20 |
| Q3 2024 | +970 | Add 0.04% | 2.66 M | $505.22 |
| Q4 2024 | -1,307 | Reduce 0.05% | 2.66 M | $413.44 |
| Q1 2025 | -14,524 | Reduce 0.55% | 2.65 M | $419.95 |
| Q2 2025 | -9,042 | Reduce 0.34% | 2.64 M | $536.34 |
| Q3 2025 | -28,832 | Reduce 1.09% | 2.61 M | $638.89 |
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 43 quarters since Q1 2015. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Terry Smith's largest addition to IDEXX Laboratories, Inc. (IDXX) was in Q3 2017, adding 18,492,918 shares worth $1.58 B. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Terry Smith's firm, Fundsmith Llp, owns 2,610,457 shares of IDEXX Laboratories, Inc. (IDXX), valued at approximately $1.67 B. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, IDEXX Laboratories, Inc. (IDXX) represents approximately 8.43% of Terry Smith's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Terry Smith's peak holding in IDEXX Laboratories, Inc. (IDXX) was 18,492,918 shares, as reported at the end of Q3 2017. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.