150 institutions reported holding $363.2M of BLACKROCK MUNIHLDNGS CALI (MUC) in SEC 13F filings for 2026-06-30. Largest institutional holders: MORGAN STANLEY ($81.3M), Karpus Management, Inc. ($50.6M), GUGGENHEIM CAPITAL LLC ($28.5M), BANK OF AMERICA CORP /DE/ ($26.4M), Advisors Asset Management, Inc. ($25.3M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30