SCHEDULE 13G Filed 2026-10-30 Event — SEC 0002100121-26-001039 →

VANGUARD PORTFOLIO MANAGEMENT LLC → Alnylam Pharmaceuticals Inc ALNY

Stake: — Shares: — Class: Common Stock

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 25/100

Passive Schedule 13G filer baseline
Held by 1 tracked 13F institutional manager
Elevated short days-to-cover (5.1 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

1 13D/G filings on this issuer

0 other filings besides this one

Filer Track Record

17 filings by this filer

16 other filings in the data moat

Short Interest · settle 2026-10-15

DTC 5.10

6,568,786 shares short · -14.8% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $4.41M

Point72 Asset Mgmt

Other Filings by VANGUARD PORTFOLIO MANAGEMENT LLC

Filed	Form	Issuer	Stake	Shares
2026-10-30	SCHEDULE 13G	A10 Networks Inc	—	—	view →
2026-10-30	SCHEDULE 13G	ADI Global Distribution Inc	—	—	view →
2026-09-03	SCHEDULE 13G	ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/	—	—	view →
2026-09-03	SCHEDULE 13G	BellRing Brands, Inc.	—	—	view →
2026-09-03	SCHEDULE 13G	CAL-MAINE FOODS INC	—	—	view →
2026-09-03	SCHEDULE 13G	Pediatrix Medical Group, Inc.	—	—	view →
2026-07-31	SCHEDULE 13G	Atmus Filtration Technologies Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Autodesk Inc	—	—	view →
2026-07-31	SCHEDULE 13G	ACM Research Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Bright Horizons Family Solutions Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Buckle Inc/The	—	—	view →
2026-07-31	SCHEDULE 13G	AGNT Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Argan Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Ashland Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Alignment Healthcare Inc	—	—	view →
2026-07-31	SCHEDULE 13G	Astrana Health Inc	—	—	view →

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