782 institutions reported holding Alnylam as of 2026-03-31, totalling $42.4B. Sourced from SEC Form 13F filings, filed up to 45 days after quarter end.
#
Institution
Value
1
FMR LLC
$4.8B
2
Capital World Investors
$3.6B
3
BlackRock, Inc.
$3.5B
4
Capital Research Global Investors
$3.1B
5
VANGUARD PORTFOLIO MANAGEMENT LLC
$2.1B
Source: SEC Form 13F filings via SEC EDGAR. Covers long US-listed equity only — short positions, bonds and non-US holdings are not reported on this form.