131 institutions reported holding $244.7M of BLACKROCK (BOE) in SEC 13F filings for 2026-06-30. Largest institutional holders: MORGAN STANLEY ($101.7M), Advisors Asset Management, Inc. ($15.7M), GUGGENHEIM CAPITAL LLC ($15.4M), Karpus Management, Inc. ($14.6M), LAZARD ASSET MANAGEMENT LLC ($10.7M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30