Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
260,50 € ↑8,70 (3,46%)
2026-06-04
DEL PRIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionRonald Blue Trust, Inc.
Latest Disclosed Ownership266 shares
Latest Disclosed Value $ 88,012
Ronald Blue Trust, Inc. reports 6.34% decrease in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On April 20, 2026 - Ronald Blue Trust, Inc. filed a 13F-HR form disclosing ownership of 266 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $75,996 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 284 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -6.34% during the quarter. The current value of the position is $69,293 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)
2026-04-20 2026-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 266 -18 -6.34 88 -21.43 0.0010
2026-01-16 2025-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 284 -65 -18.62 113 -29.56 0.0013
2025-10-16 2025-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 349 -944 -73.01 159 -62.23 0.0018
2025-07-24 2025-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,293 135 11.66 422 34.94 0.0050
2025-04-21 2025-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,158 293 33.87 313 53.69 0.0040
2025-01-30 2024-12-31 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 865 403 87.23 204 81.25 0.0026
2025-01-22 2024-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,350 888 371 0.0020
2024-10-17 2024-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 462 375 431.03 112 761.54 0.0015
2024-07-18 2024-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 87 72 480.00 13 550.00 0.0002
2024-05-01 2024-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 15 -27 -64.29 2 0.0000
2024-01-18 2023-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 42 -59 -58.42 0 0.0001
2023-10-11 2023-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 101 10 10.99 0 0.0003
2023-07-14 2023-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 91 -15 -14.15 0 0.0003
2023-04-17 2023-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 106 -2 -1.85 0 0.0004
2023-01-17 2022-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 108 87 414.29 0 -100.00 0.0004
2022-10-21 2022-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 21 8 61.54 3 50.00 0.0001
2022-08-09 2022-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 13 13 2 0.0000
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.