385 institutions reported holding Alkermes as of 2026-03-31, totalling $6.2B. Sourced from SEC Form 13F filings, filed up to 45 days after quarter end.
#
Institution
Value
1
BlackRock, Inc.
$1.0B
2
BAKER BROS. ADVISORS LP
$354M
3
VANGUARD PORTFOLIO MANAGEMENT LLC
$336M
4
STATE STREET CORP
$335M
5
VANGUARD CAPITAL MANAGEMENT LLC
$263M
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.