 Core Wealth Advisors Inc. trimmed its stake in BlackRock Inv. Quality Munic. Trust Inc. NYSE:BKN by 10.1 in the 1st quarter, according to its most recent filing with the Securities and Exchange Commission SEC. The fund owned 23,333 shares of the companys stock after selling 2,618 shares during the period. BlackRock Inv. Quality Munic. Trust ... 