178 institutions reported holding $1.15B of PERSONALIS INC (PSNL) in SEC 13F filings for 2026-06-30. Largest institutional holders: Merck & Co., Inc. ($188.2M), ARK Investment Management LLC ($110.8M), BlackRock, Inc. ($94.9M), LIGHTSPEED MANAGEMENT COMPANY, L.L.C. ($81.8M), AMERIPRISE FINANCIAL INC ($81.6M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30