Robert Goldfarb - Ruane, Cunniff & Goldfarb
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    50
Portfolio value:    $6,028,259,104
Holdings Activity Buys Sells    History
Holding/activity history for  IDEXX Laboratories, Inc. (IDXX)
← All IDXX superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2019   Q4 0 0.00 Sell 100.00% <0.01 $246.74–294.57 · VW $266.44i SEC
2019   Q3 1,146 <0.01 $272.25 $312,000 SEC
2019   Q2 1,146 <0.01 $275.74 $316,000 SEC
2019   Q1 1,146 <0.01 Reduce 28.02% <0.01 $176.11–226.15 · VW $208.29i $256,000 SEC
2018   Q4 1,592 <0.01 $185.93 $296,000 SEC
2018   Q3 1,592 <0.01 Reduce 11.01% <0.01 $215.28–256.22 · VW $243.88i $397,000 SEC
2018   Q2 1,789 <0.01 Add 33.21% <0.01 $183.86–229.01 · VW $206.26i $390,000 SEC
2018   Q1 1,343 <0.01 $189.13 $254,000 SEC
Price snapshot:
Current price$564.21
52-week low$506.91
52-week high$769.98