25 institutions reported holding $9.2M of FIRST TR EXCHANGE TRADED FD VIII FIRST TRUST FLEXIBLE MUNICIPAL HIGH INCOME ETF (MFLX) in SEC 13F filings for 2026-06-30. Largest institutional holders: HARBOUR INVESTMENTS, INC. ($1.6M), ENVESTNET ASSET MANAGEMENT INC ($984,402), OSAIC HOLDINGS, INC. ($971,848), Kestra Advisory Services, LLC ($836,734), Cetera Investment Advisers ($600,429). Source: SEC Form 13F.
来源:SEC 13F 申报文件 · 截至 2026-06-30