Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
260,50 € ↑8,70 (3,46%)
2026-06-04
CENA AKCJI
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Commonwealth Equity Services, Llc closes position in DUL / Alnylam Pharmaceuticals, Inc.

On April 27, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 0 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 9,745 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-27 2026-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 0 -9,745 -100.00 0 -100.00
2026-02-12 2025-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 9,745 338 3.59 3,875 96,750.00 0.0052
2025-10-22 2025-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 9,407 -519 -5.23 4 33.33 0.0056
2025-08-06 2025-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 9,926 1,455 17.18 3 50.00 0.0043
2025-05-09 2025-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 8,471 1,934 29.59 2 100.00 0.0032
2025-02-10 2024-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 6,537 1,234 23.27 2 0.00 0.0022
2024-10-18 2024-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,303 -449 -7.81 1 0.00 0.0022
2024-07-31 2024-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,752 158 2.82 1 0.0022
2024-04-29 2024-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,594 1,365 32.28 1 0.0014
2024-02-06 2023-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,229 -143 -3.27 1 0.0015
2023-10-23 2023-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,372 363 9.05 1 0.0016
2023-08-10 2023-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,009 348 9.51 1 0.0015
2023-05-11 2023-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,661 -1,546 -29.69 1 -100.00 0.0015
2023-02-07 2022-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,207 433 9.07 1 -99.90 0.0030
2022-11-14 2022-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,774 198 4.33 955 43.18 0.0025
2022-07-19 2022-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,576 -442 -8.81 667 -18.56 0.0017
2022-05-04 2022-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,018 -193 -3.70 819 -7.25 0.0019
2022-01-31 2021-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,211 942 22.07 883 9.55 0.0020
2021-10-29 2021-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,269 -103 -2.36 806 8.77 0.0020
2021-08-11 2021-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,372 -444 -9.22 741 9.13 0.0019
2021-05-04 2021-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,816 476 10.97 679 20.39 0.0019
2021-02-11 2020-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,340 -7 -0.16 564 -10.76 0.0017
2020-11-05 2020-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,347 133 3.16 632 1.28 0.0022
2020-08-12 2020-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,214 84 2.03 624 38.98 0.0024
2020-05-11 2020-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,130 -1,470 -26.25 449 -30.28 0.0021
2020-02-05 2019-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,600 -1,459 -20.67 644 13.58 0.0025
2019-10-30 2019-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 7,059 -37 -0.52 567 10.31 0.0024
2019-07-19 2019-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 7,096 76 1.08 514 -21.65 0.0023
2019-05-13 2019-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 7,020 -2,051 -22.61 656 -0.76 0.0030
2019-02-11 2018-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 9,071 5,802 177.49 661 131.12 0.0035
2018-11-06 2018-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,269 206 6.73 286 -5.30 0.0014
2018-07-31 2018-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,063 100 3.37 302 -14.20 0.0016
2018-05-14 2018-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 2,963 -2,910 -49.55 352 -52.82 0.0019
2018-02-12 2017-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,873 5,873 746 0.0041
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.