Alnylam Pharmaceuticals, Inc.
DE ˙ XTRA ˙ US02043Q1076
251,80 € ↑6,70 (2,73%)
2026-06-03
AKTIENPREIS
SecurityDE:DUL / Alnylam Pharmaceuticals, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership35,532 shares
Latest Disclosed Value $ 11,756,473
Strs Ohio reports 26.74% increase in ownership of DUL / Alnylam Pharmaceuticals, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 35,532 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $10,151,492 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 28,036 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of 26.74% during the quarter. The current value of the position is $8,946,958 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)
2026-04-24 2026-03-31 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 35,532 7,496 26.74 11,756 5.45 0.0466
2026-02-02 2025-12-31 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 28,036 51 0.18 11,149 -12.64 0.0416
2025-10-30 2025-09-30 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 27,985 -2,155 -7.15 12,761 29.84 0.0468
2025-08-04 2025-06-30 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 30,140 1,323 4.59 9,828 26.31 0.0367
2025-05-28 2025-03-31 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 28,817 3,817 15.27 7,781 32.28 0.0326
2025-05-28 2024-12-31 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 25,000 -4,468 -15.16 5,883 -27.42 0.0233
2024-11-01 2024-09-30 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 29,468 4,468 17.87 8,105 33.40 0.0312
2024-08-05 2024-06-30 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 25,000 0 0.00 6,075 202,400.00 0.0240
2024-05-13 2024-03-31 13F ALNYLAM PHARMACEUTICALS COM_STK 02043Q107 25,000 0 0.00 4 -25.00 0.0149
2024-01-30 2023-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 25,000 0 0.00 5 0.00 0.0199
2023-10-26 2023-09-30 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 25,000 -5,000 -16.67 4 -20.00 0.0197
2023-10-26 2023-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 25,000 -5,000 4 0.0197
2023-07-31 2023-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 30,000 25,472 562.54 6 0.0241
2023-08-02 2023-03-31 13F/A-2 ALNYLAM PHARMACEUTICALS COM 02043Q107 4,528 905 24.98 1 0.0039
2023-08-02 2023-03-31 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 4,528 905 1 0.0039
2023-04-27 2023-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,528 905 1 0.0047
2023-01-26 2022-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,623 312 9.42 1 -100.00 0.0039
2022-10-27 2022-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,311 3,311 662 0.0032
2022-07-25 2022-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 0 -5,291 -100.00 0 -100.00
2022-04-21 2022-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 5,291 4,000 309.84 863 295.87 0.0032
2022-01-24 2021-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,291 0 0.00 218 -10.29 0.0008
2021-10-22 2021-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,291 0 0.00 243 11.47 0.0009
2021-07-26 2021-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,291 -3,029 -70.12 218 -64.20 0.0008
2021-04-23 2021-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,320 -150 -3.36 609 5.00 0.0023
2021-01-25 2020-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,470 -7,069 -61.26 580 -65.48 0.0022
2020-12-14 2020-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 11,539 -409 -3.42 1,680 -5.03 0.0070
2020-07-23 2020-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 11,948 8,046 206.20 1,769 317.22 0.0077
2020-04-23 2020-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 3,902 2,835 265.70 424 247.54 0.0022
2020-01-24 2019-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,067 0 0.00 122 43.53 0.0005
2019-10-21 2019-09-30 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 1,067 0 0.00 85 10.39 0.0004
2019-10-21 2019-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,067 0 85 376.2147
2019-07-25 2019-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,067 0 0.00 77 -22.22 0.0003
2019-04-19 2019-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,067 -3,115 -74.49 99 -67.43 0.0004
2019-01-23 2018-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,182 0 0.00 304 -16.94 0.0015
2018-10-19 2018-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,182 0 0.00 366 -10.95 0.0016
2018-08-06 2018-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,182 3,100 286.51 411 221.09 0.0018
2018-04-20 2018-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,082 -35 -3.13 128 -9.22 0.0006
2018-01-23 2017-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,117 1,117 141 0.0006
2016-07-26 2016-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 0 -1,699 -100.00 0 -100.00
2016-04-25 2016-03-31 13F/A-1 ALNYLAM PHARMACEUTICALS COM 02043Q107 1,699 105 6.59 106 -29.33 0.0005
2016-04-21 2016-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,699 106
2016-01-28 2015-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,594 192 13.69 150 33.93 0.0007
2015-10-21 2015-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 1,402 -12,198 -89.69 112 -87.73 0.0005
2014-04-28 2014-03-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 13,600 0 0.00 913 4.34 0.0041
2014-01-30 2013-12-31 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 13,600 -1,600 -10.53 875 -10.07 0.0039
2013-10-24 2013-09-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 15,200 10,500 223.40 973 566.44 0.0043
2013-08-12 2013-06-30 13F ALNYLAM PHARMACEUTICALS COM 02043Q107 4,700 4,700 146 0.0006
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.