California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Alnylam Pharmaceuticals ALNY Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio ALNY Stock Details ALNY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$65.1M Sell
196,863
-4,953
-2% -$1.69M 0.07% 240
2025
Q4 		$80.3M Sell
201,816
-1,962
-1% -$868K 0.08% 201
2025
Q3 		$92.9M Buy
203,778
+4,462
+2% +$1.82M 0.1% 183
2025
Q2 		$65M Buy
199,316
+1,873
+0.9% +$518K 0.07% 242
2025
Q1 		$53.3M Buy
197,443
+1,081
+0.6% +$278K 0.07% 270
2024
Q4 		$46.2M Buy
196,362
+5,037
+3% +$1.32M 0.05% 307
2024
Q3 		$52.6M Sell
191,325
-2,269
-1% -$591K 0.06% 286
2024
Q2 		$47M Buy
193,594
+2,176
+1% +$344K 0.06% 291
2024
Q1 		$28.6M Sell
191,418
-160
-0.1% -$26.7K 0.04% 404
2023
Q4 		$36.7M Buy
191,578
+1,347
+0.7% +$229K 0.05% 327
2023
Q3 		$33.7M Sell
190,231
-8,367
-4% -$1.6M 0.05% 327
2023
Q2 		$37.7M Sell
198,598
-4,664
-2% -$925K 0.05% 325
2023
Q1 		$40.7M Buy
203,262
+1,531
+0.8% +$322K 0.06% 306
2022
Q4 		$47.9M Buy
201,731
+3,380
+2% +$721K 0.08% 261
2022
Q3 		$39.7M Sell
198,351
-1,620
-0.8% -$309K 0.07% 280
2022
Q2 		$29.2M Buy
199,971
+758
+0.4% +$108K 0.05% 366
2022
Q1 		$32.5M Sell
199,213
-10,519
-5% -$1.6M 0.04% 382
2021
Q4 		$35.6M Buy
209,732
+4,340
+2% +$807K 0.04% 400
2021
Q3 		$38.8M Sell
205,392
-4,439
-2% -$833K 0.05% 343
2021
Q2 		$35.6M Sell
209,831
-6,445
-3% -$944K 0.04% 383
2021
Q1 		$30.5M Buy
216,276
+1,020
+0.5% +$153K 0.04% 409
2020
Q4 		$28M Buy
215,256
+4,599
+2% +$614K 0.04% 412
2020
Q3 		$30.7M Buy
210,657
+6,789
+3% +$965K 0.05% 330
2020
Q2 		$30.2M Buy
203,868
+16,660
+9% +$2.25M 0.05% 312
2020
Q1 		$20.4M Buy
187,208
+655
+0.4% +$75.6K 0.04% 350
2019
Q4 		$21.5M Buy
186,553
+13,037
+8% +$1.3M 0.04% 419
2019
Q3 		$14M Buy
173,516
+1,775
+1% +$140K 0.03% 534
2019
Q2 		$12.5M Buy
171,741
+19,192
+13% +$1.47M 0.02% 589
2019
Q1 		$14.3M Buy
152,549
+8,213
+6% +$687K 0.03% 515
2018
Q4 		$10.5M Buy
144,336
+1,399
+1% +$108K 0.02% 566
2018
Q3 		$12.5M Buy
142,937
+14
+0% +$1.41K 0.02% 581
2018
Q2 		$14.1M Buy
142,923
+3,496
+3% +$347K 0.03% 531
2018
Q1 		$16.6M Sell
139,427
-2,852
-2% -$368K 0.04% 464
2017
Q4 		$18.1M Buy
142,279
+12,605
+10% +$1.58M 0.04% 447
2017
Q3 		$15.2M Sell
129,674
-5,221
-4% -$446K 0.03% 482
2017
Q2 		$10.8M Sell
134,895
-14,395
-10% -$920K 0.02% 625
2017
Q1 		$7.65M Sell
149,290
-6,800
-4% -$314K 0.02% 815
2016
Q4 		$5.84M Sell
156,090
-4,200
-3% -$176K 0.01% 975
2016
Q3 		$10.9M Buy
160,290
+1,400
+0.9% +$98.8K 0.02% 652
2016
Q2 		$8.82M Buy
158,890
+397
+0.3% +$25K 0.02% 717
2016
Q1 		$9.95M Buy
158,493
+20,201
+15% +$1.34M 0.02% 675
2015
Q4 		$13M Buy
138,292
+2,196
+2% +$204K 0.03% 518
2015
Q3 		$10.9M Buy
136,096
+587
+0.4% +$65.2K 0.03% 575
2015
Q2 		$16.2M Buy
135,509
+2,891
+2% +$345K 0.04% 456
2015
Q1 		$13.8M Buy
132,618
+8,256
+7% +$837K 0.03% 529
2014
Q4 		$12.1M Buy
124,362
+1,127
+0.9% +$104K 0.03% 573
2014
Q3 		$9.63M Buy
123,235
+1,981
+2% +$128K 0.02% 641
2014
Q2 		$7.66M Buy
121,254
+15,500
+15% +$921K 0.02% 775
2014
Q1 		$7.1M Buy
105,754
+500
+0.5% +$38.7K 0.02% 781
2013
Q4 		$6.77M Buy
105,254
+700
+0.7% +$41.8K 0.02% 787
2013
Q3 		$6.69M Buy
104,554
+3,281
+3% +$164K 0.02% 751
2013
Q2 		$3.14M Buy
+101,273
New +$2.69M 0.01% 1108

Other funds holding ALNY

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) reduced its Alnylam Pharmaceuticals (ALNY) stake by 2.5% in Q1 2026, selling an estimated $1.69M and leaving 196,863 shares worth $65.1M. The position accounts for 0.07% of the portfolio, ranked #240.

California State Teachers Retirement System (CalSTRS) first reported a position in ALNY in Q2 2013 and has held it in 52 quarters since. The position peaked at $92.9M in Q3 2025. 787 funds tracked by Wall St. Rank hold ALNY as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 196,863 shares of Alnylam Pharmaceuticals worth $65.1M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) sold 4,953 Alnylam Pharmaceuticals shares in Q1 2026, an estimated $1.69M.
  • Alnylam Pharmaceuticals made up 0.07% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #240 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Alnylam Pharmaceuticals in Q2 2013 and has held it in 52 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Alnylam Pharmaceuticals position peaked at $92.9M in Q3 2025.
  • 787 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q1 2026.

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