SEC 13F Intelligence

Rock Springs Capital Management LP / IDXX

Rock Springs Capital Management LP’s Idexx Labs Inc Position

Does Rock Springs Capital Management LP own Idexx Labs Inc (IDXX)? Not currently — the last reported position was 119.5K shares worth $58M in Q2 2024; the fund’s latest 13F (Q1 2026) no longer reports it.

Position Value
$58M
Q2 2024
Shares
119.5K
% of Portfolio
+1.75%
Quarters Held
23
position exited

Position History IDXX

Reported value by quarter
Q4 ’18: $21MQ4 ’18Q1 ’19: $27MQ2 ’19: $33MQ3 ’19: $33MQ3 ’19Q4 ’19: $31MQ1 ’20: $30MQ2 ’20: $41MQ2 ’20Q3 ’20: $49MQ4 ’20: $62MQ1 ’21: $88MQ1 ’21Q2 ’21: $114MQ3 ’21: $112MQ4 ’21: $119MQ4 ’21Q1 ’22: $120MQ2 ’22: $78MQ3 ’22: $73MQ3 ’22Q4 ’22: $85MQ1 ’23: $104MQ2 ’23: $98MQ2 ’23Q3 ’23: $85MQ4 ’23: $99MQ1 ’24: $97MQ1 ’24Q2 ’24: $58Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q2 2024119.5K$58M+1.75%
Q1 2024179.3K$97M+2.46%
Q4 2023179.3K$99M+2.45%
Q3 2023194.5K$85M+2.28%
Q2 2023194.5K$98M+2.32%
Q1 2023207.5K$104M+2.48%
Q4 2022207.5K$85M+2.04%
Q3 2022224.3K$73M+1.89%
Q2 2022223.8K$78M+2.28%
Q1 2022218.8K$120M+3.01%
Q4 2021180.0K$119M+2.74%
Q3 2021180.0K$112M+2.35%
Q2 2021180.0K$114M+2.25%
Q1 2021180.0K$88M+1.92%
Q4 2020125.0K$62M+1.32%
Q3 2020125.0K$49M+1.25%
Q2 2020125.0K$41M+1.13%
Q1 2020125.0K$30M+1.25%
Q4 2019120.2K$31M+0.99%
Q3 2019120.2K$33M+1.30%
Q2 2019120.2K$33M+1.20%
Q1 2019120.2K$27M+1.04%
Q4 2018110.5K$21M+0.97%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of IDXX.