California State Teachers Retirement System (CalSTRS)
ARWR icon

California State Teachers Retirement System (CalSTRS)’s Arrowhead Research ARWR Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio ARWR Stock Details ARWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$9.05M Buy
144,313
+25,941
+22% +$1.64M 0.01% 731
2025
Q4 		$7.86M Buy
118,372
+14,390
+14% +$705K 0.01% 724
2025
Q3 		$3.59M Buy
103,982
+6
+0% +$132 ﹤0.01% 1091
2025
Q2 		$1.64M Buy
103,976
+1,301
+1% +$18.7K ﹤0.01% 1469
2025
Q1 		$1.31M Sell
102,675
-2,479
-2% -$45.1K ﹤0.01% 1551
2024
Q4 		$1.98M Sell
105,154
-1,139
-1% -$23.5K ﹤0.01% 1417
2024
Q3 		$2.06M Sell
106,293
-14,382
-12% -$351K ﹤0.01% 1391
2024
Q2 		$3.14M Sell
120,675
-1,811
-1% -$44.5K ﹤0.01% 1107
2024
Q1 		$3.5M Buy
122,486
+15,136
+14% +$484K ﹤0.01% 1082
2023
Q4 		$3.28M Sell
107,350
-4,783
-4% -$127K ﹤0.01% 1147
2023
Q3 		$3.01M Sell
112,133
-12,512
-10% -$383K ﹤0.01% 1148
2023
Q2 		$4.44M Sell
124,645
-2,121
-2% -$73.1K 0.01% 1028
2023
Q1 		$3.22M Sell
126,766
-1,968
-2% -$61.9K ﹤0.01% 1202
2022
Q4 		$5.22M Buy
128,734
+1,655
+1% +$54.8K 0.01% 916
2022
Q3 		$4.2M Sell
127,079
-2,252
-2% -$90.9K 0.01% 1001
2022
Q2 		$4.55M Buy
129,331
+638
+0.5% +$24K 0.01% 1005
2022
Q1 		$5.92M Sell
128,693
-10,314
-7% -$511K 0.01% 967
2021
Q4 		$9.22M Buy
139,007
+3,232
+2% +$222K 0.01% 812
2021
Q3 		$8.48M Sell
135,775
-3,918
-3% -$254K 0.01% 884
2021
Q2 		$11.6M Sell
139,693
-14,717
-10% -$1.1M 0.01% 758
2021
Q1 		$10.2M Buy
154,410
+2,587
+2% +$201K 0.01% 798
2020
Q4 		$11.6M Sell
151,823
-98
-0.1% -$6.27K 0.02% 700
2020
Q3 		$6.54M Buy
151,921
+573
+0.4% +$24.7K 0.01% 838
2020
Q2 		$6.54M Sell
151,348
-812
-0.5% -$28.7K 0.01% 820
2020
Q1 		$4.38M Buy
152,160
+9,536
+7% +$385K 0.01% 881
2019
Q4 		$9.05M Sell
142,624
-3,195
-2% -$159K 0.02% 719
2019
Q3 		$4.11M Buy
145,819
+2,052
+1% +$60.7K 0.01% 1098
2019
Q2 		$3.81M Buy
143,767
+405
+0.3% +$8.89K 0.01% 1162
2019
Q1 		$2.63M Buy
143,362
+7,032
+5% +$116K 0.01% 1346
2018
Q4 		$1.69M Buy
136,330
+3,058
+2% +$41.8K ﹤0.01% 1578
2018
Q3 		$2.56M Buy
133,272
+62
+0% +$1.02K 0.01% 1457
2018
Q2 		$1.81M Buy
+133,210
New +$1.25M ﹤0.01% 1681
2017
Q2 		– Sell
-138,606
Closed -$256K – 3014
2017
Q1 		$256K Sell
138,606
-2,100
-1% -$4.17K ﹤0.01% 2770
2016
Q4 		$218K Buy
140,706
+12,900
+10% +$55K ﹤0.01% 2844
2016
Q3 		$939K Buy
127,806
+900
+0.7% +$5.83K ﹤0.01% 2119
2016
Q2 		$675K Buy
126,906
+852
+0.7% +$4.86K ﹤0.01% 2269
2016
Q1 		$608K Buy
126,054
+15,789
+14% +$66.6K ﹤0.01% 2310
2015
Q4 		$678K Buy
110,265
+2,000
+2% +$11.3K ﹤0.01% 2230
2015
Q3 		$624K Sell
108,265
-400
-0.4% -$2.52K ﹤0.01% 2275
2015
Q2 		$777K Buy
108,665
+8,812
+9% +$60.6K ﹤0.01% 2271
2015
Q1 		$676K Sell
99,853
-1,900
-2% -$13.5K ﹤0.01% 2264
2014
Q4 		$751K Buy
101,753
+6,109
+6% +$41.6K ﹤0.01% 2241
2014
Q3 		$1.41M Buy
95,644
+944
+1% +$12.9K ﹤0.01% 1783
2014
Q2 		$1.35M Buy
+94,700
New +$1.24M ﹤0.01% 1861

Other funds holding ARWR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
FAM
Fred Alger Management New York $22.8B AUM 64.63% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) increased its Arrowhead Research (ARWR) stake by 22% in Q1 2026, buying an estimated $1.64M and bringing the position to 144,313 shares worth $9.05M. The position accounts for 0.01% of the portfolio, ranked #731.

California State Teachers Retirement System (CalSTRS) first reported a position in ARWR in Q2 2014 and has held it in 44 quarters since. The position peaked at $11.6M in Q4 2020. 436 funds tracked by Wall St. Rank hold ARWR as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 144,313 shares of Arrowhead Research worth $9.05M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 25,941 Arrowhead Research shares in Q1 2026, an estimated $1.64M.
  • Arrowhead Research made up 0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #731 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Arrowhead Research in Q2 2014 and has held it in 44 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Arrowhead Research position peaked at $11.6M in Q4 2020.
  • 436 funds tracked by Wall St. Rank held Arrowhead Research as of Q1 2026.

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