Utah Retirement Systems reports 0.60% decrease in ownership of DUL / Alnylam Pharmaceuticals, Inc.

Alnylam Pharmaceuticals, Inc.

DE ˙ XTRA ˙ US02043Q1076

260,50 € ↑8,70 (3,46%)

2026-06-04
DEL PRIS

Security	DE:DUL / Alnylam Pharmaceuticals, Inc.
Institution	Utah Retirement Systems
Latest Disclosed Ownership	20,601 shares
Latest Disclosed Value	$ 6,816,253

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 20,601 shares of Alnylam Pharmaceuticals, Inc. (DE:DUL) valued at $5,885,706 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 20,725 shares of Alnylam Pharmaceuticals, Inc.. This represents a change in shares of -0.60% during the quarter. The current value of the position is $5,366,560 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,601	-124	-0.60	6,816	-17.29	0.0697
2026-02-17	2025-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,725	126	0.61	8,241	-12.26	0.0784
2025-11-14	2025-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,599	-371	-1.77	9,393	37.36	0.0912
2025-08-14	2025-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,970	-355	-1.66	6,838	18.76	0.0714
2025-05-15	2025-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,325	0	0.00	5,758	14.77	0.0664
2025-02-14	2024-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,325	400	1.91	5,018	-12.82	0.0553
2024-11-14	2024-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,925	200	0.97	5,755	14.28	0.0649
2024-08-14	2024-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,725	-800	-3.72	5,036	56.59	0.0598
2024-05-15	2024-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,525	100	0.47	3,217	-21.56	0.0376
2024-02-14	2023-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,425	100	0.47	4,101	8.58	0.0522
2023-11-14	2023-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,325	100	0.47	3,777	-6.33	0.0540
2023-08-14	2023-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,225	-600	-2.75	4,031	-7.78	0.0559
2023-05-16	2023-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,825	54	0.25	4,372	-15.50	0.0632
2023-02-15	2022-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,771	199	0.92	5,174	19.80	0.0820
2022-11-14	2022-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,572	200	0.94	4,318	38.53	0.0720
2022-08-16	2022-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,372	0	0.00	3,117	-10.69	0.0499
2022-05-13	2022-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,372	-100	-0.47	3,490	-4.15	0.0464
2022-02-14	2021-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,472	0	0.00	3,641	-10.21	0.0450
2021-11-16	2021-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,472	-800	-3.59	4,055	7.42	0.0548
2021-08-16	2021-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	22,272	100	0.45	3,775	20.61	0.0486
2021-05-17	2021-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	22,172	-1,000	-4.32	3,130	3.92	0.0436
2021-02-16	2020-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	23,172	1,000	4.51	3,012	-6.69	0.0428
2020-11-16	2020-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	22,172	400	1.84	3,228	0.09	0.0536
2020-08-13	2020-06-30	13F/A-1	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,772	1,600	7.93	3,225	46.86	0.0592
2020-08-13	2020-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	21,772	1,600		3,225		59,191.7979
2020-05-15	2020-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,172	0	0.00	2,196	-5.47	0.0475
2020-02-12	2019-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,172	100	0.50	2,323	43.93	0.0408
2019-11-14	2019-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	20,072	500	2.55	1,614	13.66	0.0307
2019-08-14	2019-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	19,572	1,759	9.87	1,420	-14.71	0.0272
2019-05-15	2019-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	17,813	1,113	6.66	1,665	36.70	0.0330
2019-02-08	2018-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	16,700	100	0.60	1,218	-16.17	0.0275
2018-11-13	2018-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	16,600	100	0.61	1,453	-10.58	0.0281
2018-08-10	2018-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	16,500	300	1.85	1,625	-15.80	0.0336
2018-05-15	2018-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	16,200	200	1.25	1,930	-5.02	0.0411
2018-02-14	2017-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	16,000	1,400	9.59	2,032	18.48	0.0427
2017-11-13	2017-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	14,600	800	5.80	1,715	55.91	0.0386
2017-08-08	2017-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,800	200	1.47	1,100	57.82	0.0256
2017-05-11	2017-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,600	0	0.00	697	36.67	0.0167
2017-02-10	2016-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,600	-100	-0.73	510	-45.04	0.0128
2016-11-07	2016-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,700	0	0.00	928	22.11	0.0240
2016-08-03	2016-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,700	400	3.01	760	-8.98	0.0203
2016-05-10	2016-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,300	0	0.00	835	-33.31	0.0226
2016-02-11	2015-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,300	0	0.00	1,252	17.12	0.0339
2015-11-03	2015-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,300	100	0.76	1,069	-32.47	0.0306
2015-08-11	2015-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	13,200	300	2.33	1,583	17.52	0.0421
2015-05-14	2015-03-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	12,900	1,400	12.17	1,347	20.81	0.0354
2015-02-11	2014-12-31	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	11,500	0	0.00	1,115	24.16	0.0307
2014-11-06	2014-09-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	11,500	0	0.00	898	23.69	0.0257
2014-08-08	2014-06-30	13F	ALNYLAM PHARMACEUTICALS	COM	02043Q107	11,500	11,500		726		0.0208

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.