California State Teachers Retirement System (CalSTRS)’s Idexx Laboratories IDXX Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $117M | Buy |
61,590,848
+61,468,194
| +50,115% | +$34.5B | 0.02% | 1045 |
|
|
2026
Q1 | $68.9M | Sell |
122,654
-2,748
| -2% | -$1.76M | 0.07% | 234 |
|
|
2025
Q4 | $84.8M | Sell |
125,402
-1,258
| -1% | -$857K | 0.08% | 193 |
|
|
2025
Q3 | $80.9M | Sell |
126,660
-2,176
| -2% | -$1.32M | 0.08% | 202 |
|
|
2025
Q2 | $69.1M | Buy |
128,836
+2,742
| +2% | +$1.31M | 0.08% | 229 |
|
|
2025
Q1 | $53M | Sell |
126,094
-2,291
| -2% | -$995K | 0.07% | 272 |
|
|
2024
Q4 | $53.1M | Sell |
128,385
-5,324
| -4% | -$2.34M | 0.06% | 272 |
|
|
2024
Q3 | $67.6M | Sell |
133,709
-138
| -0.1% | -$67K | 0.08% | 238 |
|
|
2024
Q2 | $65.2M | Buy |
133,847
+2,223
| +2% | +$1.12M | 0.08% | 218 |
|
|
2024
Q1 | $71.1M | Buy |
131,624
+823
| +0.6% | +$450K | 0.09% | 210 |
|
|
2023
Q4 | $72.6M | Buy |
130,801
+1,663
| +1% | +$781K | 0.1% | 194 |
|
|
2023
Q3 | $56.5M | Sell |
129,138
-4,901
| -4% | -$2.44M | 0.09% | 216 |
|
|
2023
Q2 | $67.3M | Sell |
134,039
-2,276
| -2% | -$1.09M | 0.1% | 192 |
|
|
2023
Q1 | $68.2M | Sell |
136,315
-1,874
| -1% | -$897K | 0.1% | 187 |
|
|
2022
Q4 | $56.4M | Buy |
138,189
+324
| +0.2% | +$126K | 0.09% | 226 |
|
|
2022
Q3 | $44.9M | Sell |
137,865
-1,721
| -1% | -$632K | 0.08% | 256 |
|
|
2022
Q2 | $49M | Sell |
139,586
-1,416
| -1% | -$577K | 0.08% | 241 |
|
|
2022
Q1 | $77.1M | Sell |
141,002
-8,843
| -6% | -$4.65M | 0.1% | 180 |
|
|
2021
Q4 | $98.7M | Buy |
149,845
+1,416
| +1% | +$889K | 0.12% | 156 |
|
|
2021
Q3 | $92.3M | Sell |
148,429
-3,611
| -2% | -$2.43M | 0.12% | 148 |
|
|
2021
Q2 | $96M | Sell |
152,040
-9,438
| -6% | -$5.21M | 0.12% | 148 |
|
|
2021
Q1 | $79M | Buy |
161,478
+2,279
| +1% | +$1.14M | 0.1% | 165 |
|
|
2020
Q4 | $79.6M | Buy |
159,199
+5,142
| +3% | +$2.3M | 0.11% | 156 |
|
|
2020
Q3 | $60.6M | Sell |
154,057
-2,651
| -2% | -$980K | 0.1% | 179 |
|
|
2020
Q2 | $51.7M | Buy |
156,708
+8,017
| +5% | +$2.32M | 0.09% | 196 |
|
|
2020
Q1 | $36M | Sell |
148,691
-3,896
| -3% | -$1.02M | 0.08% | 228 |
|
|
2019
Q4 | $39.8M | Buy |
152,587
+10,660
| +8% | +$2.81M | 0.07% | 261 |
|
|
2019
Q3 | $38.6M | Buy |
141,927
+1,631
| +1% | +$454K | 0.08% | 243 |
|
|
2019
Q2 | $38.6M | Sell |
140,296
-44
| -0% | -$10.8K | 0.08% | 244 |
|
|
2019
Q1 | $31.4M | Buy |
140,340
+557
| +0.4% | +$115K | 0.06% | 277 |
|
|
2018
Q4 | $26M | Buy |
139,783
+3,817
| +3% | +$783K | 0.06% | 288 |
|
|
2018
Q3 | $33.9M | Sell |
135,966
-145
| -0.1% | -$35.2K | 0.07% | 265 |
|
|
2018
Q2 | $29.7M | Sell |
136,111
-286
| -0.2% | -$58.9K | 0.06% | 286 |
|
|
2018
Q1 | $26.1M | Sell |
136,397
-6,040
| -4% | -$1.11M | 0.06% | 318 |
|
|
2017
Q4 | $22.3M | Sell |
142,437
-2,544
| -2% | -$400K | 0.05% | 377 |
|
|
2017
Q3 | $22.5M | Sell |
144,981
-14,813
| -9% | -$2.34M | 0.05% | 355 |
|
|
2017
Q2 | $25.8M | Sell |
159,794
-16,484
| -9% | -$2.68M | 0.06% | 330 |
|
|
2017
Q1 | $27.3M | Sell |
176,278
-8,300
| -4% | -$1.14M | 0.06% | 333 |
|
|
2016
Q4 | $21.6M | Sell |
184,578
-4,900
| -3% | -$559K | 0.04% | 398 |
|
|
2016
Q3 | $21.4M | Buy |
189,478
+1,600
| +0.9% | +$169K | 0.04% | 405 |
|
|
2016
Q2 | $17.4M | Sell |
187,878
-10,988
| -6% | -$944K | 0.04% | 454 |
|
|
2016
Q1 | $15.6M | Buy |
198,866
+25,418
| +15% | +$1.83M | 0.03% | 503 |
|
|
2015
Q4 | $12.6M | Buy |
173,448
+2,714
| +2% | +$194K | 0.03% | 530 |
|
|
2015
Q3 | $12.7M | Sell |
170,734
-200
| -0.1% | -$14.3K | 0.03% | 512 |
|
|
2015
Q2 | $11M | Sell |
170,934
-3,888
| -2% | -$269K | 0.03% | 603 |
|
|
2015
Q1 | $13.5M | Sell |
174,822
-3,000
| -2% | -$233K | 0.03% | 543 |
|
|
2014
Q4 | $13.2M | Sell |
177,822
-11,648
| -6% | -$817K | 0.03% | 543 |
|
|
2014
Q3 | $11.2M | Sell |
189,470
-324
| -0.2% | -$20.5K | 0.03% | 580 |
|
|
2014
Q2 | $12.7M | Sell |
189,794
-7,000
| -4% | -$445K | 0.03% | 533 |
|
|
2014
Q1 | $11.9M | Buy |
196,794
+800
| +0.4% | +$47.7K | 0.03% | 532 |
|
|
2013
Q4 | $10.4M | Buy |
195,994
+1,400
| +0.7% | +$73.7K | 0.03% | 568 |
|
|
2013
Q3 | $9.7M | Buy |
194,594
+6,036
| +3% | +$290K | 0.03% | 575 |
|
|
2013
Q2 | $8.46M | Buy |
+188,558
| New | +$8.24M | 0.03% | 579 |
|
Other funds holding IDXX
California State Teachers Retirement System (CalSTRS)'s IDXX Position: Q2 2026 in Review
California State Teachers Retirement System (CalSTRS) increased its Idexx Laboratories (IDXX) stake by 50,115% in Q2 2026, buying an estimated $34.5B and bringing the position to 61,590,848 shares worth $117M. The position accounts for 0.02% of the portfolio, ranked #1045.
California State Teachers Retirement System (CalSTRS) first reported a position in IDXX in Q2 2013 and has held it in 53 quarters since. 1,295 funds tracked by Wall St. Rank hold IDXX as of Q2 2026.
- California State Teachers Retirement System (CalSTRS) held 61,590,848 shares of Idexx Laboratories worth $117M as of Q2 2026.
- California State Teachers Retirement System (CalSTRS) bought 61,468,194 Idexx Laboratories shares in Q2 2026, an estimated $34.5B.
- Idexx Laboratories made up 0.02% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #1045 holding.
- California State Teachers Retirement System (CalSTRS) first reported a position in Idexx Laboratories in Q2 2013 and has held it in 53 quarters since.
- 1,295 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2026.
Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q2 2026, filed 24 Aug 2026.