Jeremy Grantham's IDXX Position Overview
Jeremy Grantham (via Grantham, Mayo, Van Otterloo & Co. LLC) currently holds 1,990 shares of IDEXX Laboratories, Inc. (IDXX) worth $1.35 M, representing 0.00% of the portfolio. First purchased in 2013-Q2, this medium-term investment has been held for 12 quarters.
Based on 13F filings, Jeremy Grantham has maintained a strategic position in IDXX, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2014, adding 49,612 shares. Largest reduction occurred in Q3 2015, reducing 58,800 shares.
Analysis based on 13F filings available since 2013 Q2
Jeremy Grantham's IDEXX Laboratories (IDXX) Holding Value Over Time
Track share changes against reported price movement
Quarterly IDEXX Laboratories (IDXX) Trades by Jeremy Grantham
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +505 | Add 34.01% | 1,990 | $676.53 |
| Q3 2025 | +1,485 | New Buy | 1,485 | $638.89 |
| Q3 2015 | -58,800 | Sold Out | 0 | $0.00 |
| Q1 2015 | -24,800 | Reduce 29.67% | 58,800 | $77.24 |
| Q4 2014 | -17,212 | Reduce 17.07% | 83,600 | $74.14 |
| Q3 2014 | +49,612 | Add 96.90% | 100,812 | $58.91 |
| Q2 2014 | -2,200 | Reduce 4.12% | 51,200 | $66.78 |
| Q1 2014 | -21,446 | Reduce 28.65% | 53,400 | $60.69 |
| Q4 2013 | -4,934 | Reduce 6.18% | 74,846 | $53.19 |
| Q3 2013 | -13,600 | Reduce 14.56% | 79,780 | $49.82 |
| Q2 2013 | +93,380 | Add 0.00% | 93,380 | $44.89 |
Jeremy Grantham's IDEXX Laboratories Investment FAQs
Jeremy Grantham first purchased IDEXX Laboratories, Inc. (IDXX) in Q2 2013, acquiring 93,380 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Jeremy Grantham has held IDEXX Laboratories, Inc. (IDXX) for 12 quarters since Q2 2013.
Jeremy Grantham's largest addition to IDEXX Laboratories, Inc. (IDXX) was in Q2 2013, adding 93,380 shares worth $4.19 M.
According to the latest 13F filing for Q4 2025, Jeremy Grantham's firm, Grantham, Mayo, Van Otterloo & Co. LLC, owns 1,990 shares of IDEXX Laboratories, Inc. (IDXX), valued at approximately $1.35 M.
As of the Q4 2025 filing, IDEXX Laboratories, Inc. (IDXX) represents approximately 0.00% of Jeremy Grantham's publicly disclosed stock portfolio, making it one of their key holdings.
Jeremy Grantham's peak holding in IDEXX Laboratories, Inc. (IDXX) was 100,812 shares, as reported at the end of Q3 2014.