Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
260,50 € ↑8,70 (3,46%)
2026-06-04
DEL PRIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionE Fund Management Co., Ltd.
Latest Disclosed Ownership6,074 shares
Latest Disclosed Value $ 2,009,704
E Fund Management Co., Ltd. reports 69.00% increase in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On April 13, 2026 - E Fund Management Co., Ltd. filed a 13F-HR form disclosing ownership of 6,074 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $1,735,342 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 15, 2025 disclosing 3,594 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of 69.00% during the quarter. The current value of the position is $1,582,277 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)
2026-04-13 2026-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 6,074 2,480 69.00 2,010 71.56 0.0597
2025-08-15 2025-06-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 3,594 -9,114 -71.72 1,172 -65.87 0.0559
2025-05-13 2025-03-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 12,708 413 3.36 3,431 18.60 0.1639
2025-02-07 2024-12-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 12,295 -342 -2.71 2,893 -16.75 0.1453
2024-11-13 2024-09-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 12,637 7,711 156.54 3,476 190.31 0.1786
2024-08-12 2024-06-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 4,926 2,112 75.05 1,197 185.00 0.0662
2024-05-13 2024-03-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 2,814 -526 -15.75 421 -34.27 0.0260
2024-02-07 2023-12-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 3,340 1,069 47.07 639 0.0405
2023-11-13 2023-09-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 2,271 -70 -2.99 0 0.0306
2023-08-11 2023-06-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 2,341 226 10.69 0 0.0352
2023-05-11 2023-03-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 2,115 287 15.70 0 -100.00 0.0309
2023-02-14 2022-12-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 1,828 -306 -14.34 434 1.64 0.0361
2022-11-14 2022-09-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 2,134 -1,181 -35.63 427 -11.59 0.0397
2022-08-15 2022-06-30 13F Alnylam Pharmaceuticals Common Stock 02043Q107 3,315 1,583 91.40 483 70.67 0.0437
2022-05-12 2022-03-31 13F Alnylam Pharmaceuticals Common Stock 02043Q107 1,732 757 77.64 283 105.07 0.0093
2021-05-12 2021-03-31 13F ALNYLAM PHARMACEUTICALS Common Stock 02043Q107 975 975 138 0.0110
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.