Parallax Volatility Advisers
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Parallax Volatility Advisers’s Alnylam Pharmaceuticals ALNY Stock Holding History

Parallax Volatility Advisers’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
2025
Q1 		– Sell
-23,161
Closed -$5.45M – 1538
2024
Q4 		$5.45M Sell
23,161
-3,374
-13% -$887K 0.01% 792
2024
Q3 		$7.3M Buy
+26,535
New +$6.91M 0.01% 659
2024
Q2 		– Sell
-2,237
Closed -$334K – 1970
2024
Q1 		$334K Buy
+2,237
New +$373K ﹤0.01% 1483
2022
Q3 		– Sell
-12,781
Closed -$1.86M – 3033
2022
Q2 		$1.86M Buy
+12,781
New +$1.81M ﹤0.01% 1382
2022
Q1 		– Sell
-1,805
Closed -$306K – 2820
2021
Q4 		$306K Sell
1,805
-605
-25% -$112K ﹤0.01% 2330
2021
Q3 		$455K Buy
+2,410
New +$452K ﹤0.01% 2264
2021
Q1 		– Sell
-8,852
Closed -$1.15M – 3205
2020
Q4 		$1.15M Sell
8,852
-6,608
-43% -$882K ﹤0.01% 2114
2020
Q3 		$2.25M Buy
15,460
+11,746
+316% +$1.67M ﹤0.01% 1640
2020
Q2 		$550K Buy
3,714
+2,260
+155% +$305K ﹤0.01% 1944
2020
Q1 		$158K Sell
1,454
-1,250
-46% -$144K ﹤0.01% 2034
2019
Q4 		$311K Buy
+2,704
New +$270K ﹤0.01% 1894
2019
Q3 		– Sell
-157
Closed -$11K – 2278
2019
Q2 		$11K Sell
157
-28
-15% -$2.15K ﹤0.01% 2157
2019
Q1 		$17K Sell
185
-4,046
-96% -$338K ﹤0.01% 2515
2018
Q4 		$308K Sell
4,231
-596
-12% -$45.8K ﹤0.01% 1634
2018
Q3 		$422K Sell
4,827
-6,714
-58% -$675K ﹤0.01% 1471
2018
Q2 		$1.14M Buy
+11,541
New +$1.14M ﹤0.01% 1064
2018
Q1 		– Sell
-299
Closed -$38K – 2186
2017
Q4 		$38K Sell
299
-45,091
-99% -$5.67M ﹤0.01% 3359
2017
Q3 		$5.33M Buy
+45,390
New +$3.87M 0.01% 553
2015
Q4 		– Sell
-1,500
Closed -$121K – 2837
2015
Q3 		$121K Hold
1,500
– – ﹤0.01% 1953
2015
Q2 		$180K Buy
+1,500
New +$179K ﹤0.01% 2033

Other funds holding ALNY

Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
RP
Regeneron Pharmaceuticals Tarrytown, New York $177M AUM 9.82% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 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

Parallax Volatility Advisers's ALNY Position: Q1 2025 in Review

Parallax Volatility Advisers sold out of Alnylam Pharmaceuticals (ALNY) in Q1 2025, closing a stake of 23,161 shares — an estimated $5.45M sold.

Parallax Volatility Advisers first reported a position in ALNY in Q2 2015 and held it in 20 quarters. The position peaked at $7.3M in Q3 2024. 627 funds tracked by Wall St. Rank hold ALNY as of Q1 2025.

  • Parallax Volatility Advisers reported no remaining Alnylam Pharmaceuticals position as of Q1 2025 after selling out during the quarter.
  • Parallax Volatility Advisers sold 23,161 Alnylam Pharmaceuticals shares in Q1 2025, an estimated $5.45M.
  • Parallax Volatility Advisers first reported a position in Alnylam Pharmaceuticals in Q2 2015 and held it in 20 quarters.
  • Parallax Volatility Advisers's Alnylam Pharmaceuticals position peaked at $7.3M in Q3 2024.
  • 627 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q1 2025.

Based on Parallax Volatility Advisers's 13F filing for Q1 2025, filed 15 May 2025.