California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Bio-Rad Laboratories Class A BIO Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio BIO Stock Details BIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$6.11M Buy
21,932
+4,082
+23% +$1.18M 0.01% 910
2025
Q4 		$5.41M Sell
17,850
-72
-0.4% -$22.5K 0.01% 884
2025
Q3 		$5.03M Buy
17,922
+1
+0% +$272 0.01% 939
2025
Q2 		$4.32M Sell
17,921
-8,283
-32% -$1.96M ﹤0.01% 970
2025
Q1 		$6.38M Buy
26,204
+307
+1% +$92.4K 0.01% 764
2024
Q4 		$8.51M Sell
25,897
-4,681
-15% -$1.59M 0.01% 673
2024
Q3 		$10.2M Sell
30,578
-412
-1% -$131K 0.01% 636
2024
Q2 		$8.46M Sell
30,990
-1,408
-4% -$410K 0.01% 670
2024
Q1 		$11.2M Buy
32,398
+131
+0.4% +$43.1K 0.01% 624
2023
Q4 		$10.4M Sell
32,267
-836
-3% -$262K 0.01% 626
2023
Q3 		$11.9M Sell
33,103
-1,439
-4% -$555K 0.02% 587
2023
Q2 		$13.1M Sell
34,542
-1,241
-3% -$505K 0.02% 587
2023
Q1 		$17.1M Sell
35,783
-249
-0.7% -$117K 0.03% 513
2022
Q4 		$15.2M Sell
36,032
-486
-1% -$196K 0.02% 539
2022
Q3 		$15.2M Sell
36,518
-325
-0.9% -$162K 0.03% 524
2022
Q2 		$18.2M Buy
36,843
+429
+1% +$223K 0.03% 498
2022
Q1 		$20.5M Sell
36,414
-2,034
-5% -$1.23M 0.03% 513
2021
Q4 		$29.1M Buy
38,448
+1,107
+3% +$828K 0.03% 456
2021
Q3 		$27.9M Buy
37,341
+406
+1% +$304K 0.04% 447
2021
Q2 		$23.8M Sell
36,935
-4,274
-10% -$2.6M 0.03% 503
2021
Q1 		$23.5M Buy
41,209
+3,252
+9% +$1.93M 0.03% 496
2020
Q4 		$22.1M Buy
37,957
+555
+1% +$316K 0.03% 484
2020
Q3 		$19.3M Buy
37,402
+704
+2% +$357K 0.03% 470
2020
Q2 		$16.6M Sell
36,698
-46
-0.1% -$20.3K 0.03% 486
2020
Q1 		$12.9M Buy
36,744
+2,498
+7% +$918K 0.03% 483
2019
Q4 		$12.7M Buy
34,246
+389
+1% +$137K 0.02% 602
2019
Q3 		$11.3M Buy
33,857
+92
+0.3% +$30K 0.02% 619
2019
Q2 		$10.6M Buy
33,765
+297
+0.9% +$88.9K 0.02% 648
2019
Q1 		$10.2M Sell
33,468
-764
-2% -$206K 0.02% 642
2018
Q4 		$7.95M Sell
34,232
-265
-0.8% -$71.1K 0.02% 694
2018
Q3 		$10.8M Sell
34,497
-101
-0.3% -$31.3K 0.02% 634
2018
Q2 		$9.98M Buy
34,598
+455
+1% +$126K 0.02% 659
2018
Q1 		$8.54M Sell
34,143
-1,106
-3% -$282K 0.02% 711
2017
Q4 		$8.41M Buy
35,249
+206
+0.6% +$49.9K 0.02% 736
2017
Q3 		$7.79M Sell
35,043
-3,640
-9% -$819K 0.02% 743
2017
Q2 		$8.75M Sell
38,683
-3,908
-9% -$852K 0.02% 725
2017
Q1 		$8.49M Sell
42,591
-1,800
-4% -$347K 0.02% 762
2016
Q4 		$8.09M Sell
44,391
-1,100
-2% -$188K 0.02% 789
2016
Q3 		$7.45M Buy
45,491
+300
+0.7% +$45.5K 0.02% 820
2016
Q2 		$6.46M Buy
45,191
+100
+0.2% +$14.3K 0.01% 869
2016
Q1 		$6.17M Buy
45,091
+5,606
+14% +$736K 0.01% 910
2015
Q4 		$5.47M Buy
39,485
+650
+2% +$90.1K 0.01% 896
2015
Q3 		$5.22M Buy
38,835
+1,104
+3% +$159K 0.01% 927
2015
Q2 		$5.68M Sell
37,731
-1,532
-4% -$219K 0.01% 954
2015
Q1 		$5.31M Sell
39,263
-588
-1% -$72.9K 0.01% 991
2014
Q4 		$4.8M Buy
39,851
+370
+0.9% +$42.6K 0.01% 1036
2014
Q3 		$4.48M Buy
39,481
+1,620
+4% +$192K 0.01% 1051
2014
Q2 		$4.53M Buy
37,861
+600
+2% +$73.3K 0.01% 1062
2014
Q1 		$4.77M Buy
37,261
+200
+0.5% +$25.6K 0.01% 981
2013
Q4 		$4.58M Buy
37,061
+200
+0.5% +$24.4K 0.01% 990
2013
Q3 		$4.33M Buy
36,861
+1,175
+3% +$139K 0.01% 974
2013
Q2 		$4M Buy
+35,686
New +$4.19M 0.01% 954

Other funds holding BIO

First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
AI
Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $24.3B AUM 34.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s BIO Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Bio-Rad Laboratories Class A (BIO) stake by 23% in Q1 2026, buying an estimated $1.18M and bringing the position to 21,932 shares worth $6.11M. The position accounts for 0.01% of the portfolio, ranked #910.

California State Teachers Retirement System (CalSTRS) first reported a position in BIO in Q2 2013 and has held it in 52 quarters since. The position peaked at $29.1M in Q4 2021. 392 funds tracked by Wall St. Rank hold BIO as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 21,932 shares of Bio-Rad Laboratories Class A worth $6.11M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 4,082 Bio-Rad Laboratories Class A shares in Q1 2026, an estimated $1.18M.
  • Bio-Rad Laboratories Class A made up 0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #910 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Bio-Rad Laboratories Class A in Q2 2013 and has held it in 52 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Bio-Rad Laboratories Class A position peaked at $29.1M in Q4 2021.
  • 392 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.