309 institutions reported holding $1.72B of AMPRIUS TECHNOLOGIES INC (AMPX) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($157.1M), JANE STREET GROUP, LLC ($129.4M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($114.3M), VANGUARD GROUP INC ($113.7M), UBS Group AG ($74.5M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30