California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Repligen RGEN Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio RGEN Stock Details RGEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$8.2M Sell
60,112
-1,748
-3% -$215K 0.01% 836
2026
Q1 		$7.29M Buy
61,860
+11,206
+22% +$1.57M 0.01% 821
2025
Q4 		$8.3M Buy
50,654
+817
+2% +$128K 0.01% 700
2025
Q3 		$6.66M Sell
49,837
-917
-2% -$111K 0.01% 789
2025
Q2 		$6.31M Sell
50,754
-197
-0.4% -$25.1K 0.01% 796
2025
Q1 		$6.48M Buy
50,951
+979
+2% +$151K 0.01% 760
2024
Q4 		$7.19M Sell
49,972
-462
-0.9% -$66.2K 0.01% 737
2024
Q3 		$7.51M Sell
50,434
-34,997
-41% -$5.02M 0.01% 732
2024
Q2 		$10.8M Buy
85,431
+3,230
+4% +$506K 0.01% 612
2024
Q1 		$15.1M Sell
82,201
-156
-0.2% -$29.7K 0.02% 569
2023
Q4 		$14.8M Sell
82,357
-699
-0.8% -$109K 0.02% 559
2023
Q3 		$13.2M Sell
83,056
-2,685
-3% -$439K 0.02% 560
2023
Q2 		$12.1M Sell
85,741
-2,783
-3% -$446K 0.02% 606
2023
Q1 		$14.9M Sell
88,524
-893
-1% -$159K 0.02% 552
2022
Q4 		$15.1M Buy
89,417
+22,110
+33% +$4.01M 0.02% 540
2022
Q3 		$12.6M Sell
67,307
-1,333
-2% -$281K 0.02% 570
2022
Q2 		$11.1M Buy
68,640
+338
+0.5% +$53.5K 0.02% 615
2022
Q1 		$12.8M Sell
68,302
-5,904
-8% -$1.12M 0.02% 636
2021
Q4 		$19.7M Sell
74,206
-16,185
-18% -$4.36M 0.02% 555
2021
Q3 		$26.1M Sell
90,391
-4,738
-5% -$1.22M 0.03% 467
2021
Q2 		$19M Sell
95,129
-2,238
-2% -$434K 0.02% 573
2021
Q1 		$18.9M Buy
97,367
+3,251
+3% +$667K 0.03% 567
2020
Q4 		$18M Buy
94,116
+1,985
+2% +$361K 0.03% 552
2020
Q3 		$13.6M Buy
92,131
+2,223
+2% +$318K 0.02% 584
2020
Q2 		$11.1M Buy
89,908
+10,459
+13% +$1.23M 0.02% 620
2020
Q1 		$7.67M Sell
79,449
-393
-0.5% -$37.9K 0.02% 648
2019
Q4 		$7.38M Sell
79,842
-788
-1% -$66.2K 0.01% 809
2019
Q3 		$6.18M Buy
80,630
+7,620
+10% +$666K 0.01% 868
2019
Q2 		$6.28M Buy
73,010
+13,156
+22% +$897K 0.01% 879
2019
Q1 		$3.54M Sell
59,854
-1,374
-2% -$79K 0.01% 1175
2018
Q4 		$3.23M Buy
61,228
+1,405
+2% +$82.4K 0.01% 1164
2018
Q3 		$3.32M Sell
59,823
-4
-0% -$206 0.01% 1295
2018
Q2 		$2.81M Buy
59,827
+2,671
+5% +$110K 0.01% 1384
2018
Q1 		$2.07M Sell
57,156
-2,056
-3% -$72.3K ﹤0.01% 1515
2017
Q4 		$2.15M Sell
59,212
-834
-1% -$30.2K ﹤0.01% 1524
2017
Q3 		$2.3M Sell
60,046
-702
-1% -$29.4K 0.01% 1477
2017
Q2 		$2.52M Sell
60,748
-5,756
-9% -$219K 0.01% 1474
2017
Q1 		$2.34M Sell
66,504
-3,100
-4% -$98.2K ﹤0.01% 1541
2016
Q4 		$2.15M Sell
69,604
-1,900
-3% -$58.8K ﹤0.01% 1630
2016
Q3 		$2.16M Buy
71,504
+700
+1% +$21.1K ﹤0.01% 1601
2016
Q2 		$1.94M Buy
70,804
+1,201
+2% +$30.7K ﹤0.01% 1650
2016
Q1 		$1.87M Buy
69,603
+8,719
+14% +$213K ﹤0.01% 1654
2015
Q4 		$1.72M Buy
60,884
+984
+2% +$28.4K ﹤0.01% 1656
2015
Q3 		$1.67M Sell
59,900
-100
-0.2% -$3.61K ﹤0.01% 1658
2015
Q2 		$2.48M Buy
60,000
+1,319
+2% +$48.3K 0.01% 1503
2015
Q1 		$1.78M Sell
58,681
-700
-1% -$18.2K ﹤0.01% 1687
2014
Q4 		$1.18M Buy
59,381
+253
+0.4% +$5.66K ﹤0.01% 1943
2014
Q3 		$1.18M Buy
59,128
+636
+1% +$13.4K ﹤0.01% 1888
2014
Q2 		$1.33M Buy
58,492
+1,300
+2% +$23.1K ﹤0.01% 1873
2014
Q1 		$735K Buy
57,192
+300
+0.5% +$4.3K ﹤0.01% 2184
2013
Q4 		$776K Buy
56,892
+600
+1% +$7.16K ﹤0.01% 2150
2013
Q3 		$624K Buy
56,292
+1,500
+3% +$14.9K ﹤0.01% 2230
2013
Q2 		$451K Buy
+54,792
New +$460K ﹤0.01% 2366

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UCFA
United Capital Financial Advisors Irving, Texas $18.2B AUM 22.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s RGEN Position: Q2 2026 in Review

California State Teachers Retirement System (CalSTRS) reduced its Repligen (RGEN) stake by 2.8% in Q2 2026, selling an estimated $215K and leaving 60,112 shares worth $8.2M. The position accounts for 0.01% of the portfolio, ranked #836.

California State Teachers Retirement System (CalSTRS) first reported a position in RGEN in Q2 2013 and has held it in 53 quarters since. The position peaked at $26.1M in Q3 2021. 477 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • California State Teachers Retirement System (CalSTRS) held 60,112 shares of Repligen worth $8.2M as of Q2 2026.
  • California State Teachers Retirement System (CalSTRS) sold 1,748 Repligen shares in Q2 2026, an estimated $215K.
  • Repligen made up 0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #836 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Repligen in Q2 2013 and has held it in 53 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Repligen position peaked at $26.1M in Q3 2021.
  • 477 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q2 2026, filed 24 Aug 2026.