BlackRock MuniHoldings Quality Fund II Inc is a closed ended fixed income mutual fund launched by BlackRock Inc It is managed by BlackRock Advisors LLC The fund invests in fixed income markets of the United States It primarily invests in longterm investment grade municipal obligations exempt from federal income taxes The fund was formerly known as BlackRock MuniHoldings Insured Fund II Inc BlackRock MuniHoldings Quality Fund II Inc was formed on February 26 1999 and is domiciled in United States