Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
260,50 € ↑8,70 (3,46%)
2026-06-04
DEL PRIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionJump Financial, LLC
Latest Disclosed Ownership19,152 shares
Latest Disclosed Value $ 6,336,822
Jump Financial, LLC reports 37.33% decrease in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On May 14, 2026 - Jump Financial, LLC filed a 13F-HR form disclosing ownership of 19,152 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $5,471,726 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 30,562 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -37.33% during the quarter. The current value of the position is $4,989,096 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 Common Stock 02043Q107 19,152 -11,410 -37.33 6,337 -47.86 0.0754
2026-02-17 2025-12-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 30,562 -4,315 -12.37 12,153 -23.59 0.1493
2025-11-13 2025-09-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 34,877 17,700 103.04 15,904 183.93 0.1903
2025-08-13 2025-06-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 17,177 1,460 9.29 5,601 32.01 0.0617
2025-05-14 2025-03-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 15,717 572 3.78 4,244 19.09 0.0583
2025-02-13 2024-12-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 15,145 15,145 3,564 0.0744
2024-08-14 2024-06-30 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 0 -17,554 -100.00 0 -100.00
2024-05-13 2024-03-31 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 17,554 10,262 140.73 2,623 88.03 0.0718
2024-10-21 2023-12-31 13F/A-1 Alnylam Pharmaceuticals Common Stock 02043Q107 7,292 7,292 1,396 0.0459
2024-02-07 2023-12-31 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 7,292 7,292 1,396 0.0461
2024-10-21 2023-09-30 13F/A-2 ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 0 -8,439 -100.00 0 -100.00
2024-10-21 2023-09-30 13F/A-1 ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 0 0
2023-11-07 2023-09-30 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 0 -8,439 0
2024-10-21 2023-06-30 13F/A-1 ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 8,439 -21,337 -71.66 1,603 -73.14 0.0602
2023-08-07 2023-06-30 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 8,439 -21,337 1,603 0.0604
2024-10-21 2023-03-31 13F/A-1 Alnylam Pharmaceuticals Common Stock 02043Q107 29,776 23,748 393.96 5,965 316.48 0.2481
2023-05-03 2023-03-31 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 29,776 23,748 5,965 0.2481
2023-02-14 2022-12-31 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 6,028 4,704 355.29 1,433 440.38 0.0759
2022-11-07 2022-09-30 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 1,324 1,324 265 0.0104
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.