California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Twist Bioscience TWST Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio TWST Stock Details TWST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$7.77M Buy
75,529
+5,181
+7% +$337K 0.01% 858
2026
Q1 		$3.34M Buy
70,348
+12,011
+21% +$539K ﹤0.01% 1252
2025
Q4 		$1.85M Sell
58,337
-8
-0% -$250 ﹤0.01% 1456
2025
Q3 		$1.64M Buy
58,345
+4,158
+8% +$126K ﹤0.01% 1517
2025
Q2 		$1.99M Buy
54,187
+442
+0.8% +$15.3K ﹤0.01% 1369
2025
Q1 		$2.11M Sell
53,745
-1,023
-2% -$46.1K ﹤0.01% 1312
2024
Q4 		$2.55M Sell
54,768
-259
-0.5% -$11.7K ﹤0.01% 1276
2024
Q3 		$2.49M Sell
55,027
-1,406
-2% -$66.9K ﹤0.01% 1284
2024
Q2 		$2.78M Sell
56,433
-1,344
-2% -$54.8K ﹤0.01% 1181
2024
Q1 		$1.98M Sell
57,777
-2,713
-4% -$97.9K ﹤0.01% 1419
2023
Q4 		$2.23M Sell
60,490
-2,561
-4% -$59.2K ﹤0.01% 1367
2023
Q3 		$1.28M Sell
63,051
-5,916
-9% -$130K ﹤0.01% 1649
2023
Q2 		$1.41M Buy
68,967
+667
+1% +$9.99K ﹤0.01% 1706
2023
Q1 		$1.03M Sell
68,300
-701
-1% -$15.5K ﹤0.01% 1869
2022
Q4 		$1.64M Buy
69,001
+843
+1% +$24.4K ﹤0.01% 1597
2022
Q3 		$2.4M Sell
68,158
-3,036
-4% -$129K ﹤0.01% 1328
2022
Q2 		$2.49M Buy
71,194
+7,539
+12% +$267K ﹤0.01% 1350
2022
Q1 		$3.14M Sell
63,655
-1,418
-2% -$78.6K ﹤0.01% 1340
2021
Q4 		$5.04M Buy
65,073
+1,715
+3% +$176K 0.01% 1150
2021
Q3 		$6.78M Sell
63,358
-1,716
-3% -$196K 0.01% 993
2021
Q2 		$8.67M Sell
65,074
-5,763
-8% -$670K 0.01% 906
2021
Q1 		$8.77M Buy
70,837
+21,243
+43% +$3.23M 0.01% 862
2020
Q4 		$7.01M Buy
49,594
+75
+0.2% +$8.32K 0.01% 928
2020
Q3 		$3.76M Buy
49,519
+4,477
+10% +$279K 0.01% 1114
2020
Q2 		$2.04M Buy
45,042
+5,299
+13% +$190K ﹤0.01% 1464
2020
Q1 		$1.22M Buy
39,743
+5,898
+17% +$159K ﹤0.01% 1582
2019
Q4 		$711K Hold
33,845
– – ﹤0.01% 2162
2019
Q3 		$808K Buy
33,845
+1,108
+3% +$32.2K ﹤0.01% 2059
2019
Q2 		$950K Buy
32,737
+24,838
+314% +$657K ﹤0.01% 2002
2019
Q1 		$183K Sell
7,899
-1,238
-14% -$28K ﹤0.01% 2783
2018
Q4 		$211K Buy
+9,137
New +$202K ﹤0.01% 2733

Other funds holding TWST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
EIG
EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) increased its Twist Bioscience (TWST) stake by 7.4% in Q2 2026, buying an estimated $337K and bringing the position to 75,529 shares worth $7.77M. The position accounts for 0.01% of the portfolio, ranked #858.

California State Teachers Retirement System (CalSTRS) first reported a position in TWST in Q4 2018 and has held it in 31 quarters since. The position peaked at $8.77M in Q1 2021. 335 funds tracked by Wall St. Rank hold TWST as of Q2 2026.

  • California State Teachers Retirement System (CalSTRS) held 75,529 shares of Twist Bioscience worth $7.77M as of Q2 2026.
  • California State Teachers Retirement System (CalSTRS) bought 5,181 Twist Bioscience shares in Q2 2026, an estimated $337K.
  • Twist Bioscience made up 0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #858 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Twist Bioscience in Q4 2018 and has held it in 31 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Twist Bioscience position peaked at $8.77M in Q1 2021.
  • 335 funds tracked by Wall St. Rank held Twist Bioscience as of Q2 2026.

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