Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
260,50 € ↑8,70 (3,46%)
2026-06-04
AKTIENPREIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionAllworth Financial LP
Latest Disclosed Ownership1,283 shares
Latest Disclosed Value $ 424,587
Allworth Financial LP reports 5.17% decrease in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On May 14, 2026 - Allworth Financial LP filed a 13F-HR form disclosing ownership of 1,283 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $366,553 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,353 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -5.17% during the quarter. The current value of the position is $334,222 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)
2026-05-14 2026-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,283 -70 -5.17 425 -21.19 0.0017
2026-02-05 2025-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,353 63 4.88 538 -8.50 0.0022
2025-12-02 2025-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,290 599 86.69 588 161.33 0.0026
2025-08-07 2025-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 691 73 11.81 225 51.01 0.0011
2025-04-30 2025-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 618 21 3.52 150 -6.29 0.0008
2025-01-30 2024-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 597 38 6.80 159 3.92 0.0009
2024-10-23 2024-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 559 -6 -1.06 154 14.18 0.0009
2024-07-24 2024-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 565 -26 -4.40 134 52.27 0.0009
2024-04-25 2024-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 591 346 141.22 88 91.30 0.0006
2024-01-24 2023-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 245 -16 -6.13 47 0.00 0.0004
2023-10-31 2023-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 261 42 19.18 46 12.20 0.0004
2023-07-18 2023-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 219 36 19.67 42 13.89 0.0004
2023-04-18 2023-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 183 3 1.67 37 -14.29 0.0004
2023-01-13 2022-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 180 -6 -3.23 43 13.51 0.0005
2022-11-14 2022-09-30 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 186 163 708.70 37 1,133.33 0.0005
2022-10-18 2022-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 186 163 37 0.0005
2022-07-13 2022-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 23 8 53.33 3 50.00 0.0000
2022-04-22 2022-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 15 -46 -75.41 2 -80.00 0.0000
2022-01-21 2021-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 61 61 10 0.0001
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.