Short Interest in BlackRock MuniYield Quality Fund Grows by 52.1% BlackRock MuniYield Quality Fund (NYSE:MQY) saw a 52.1% increase in short interest in February, reaching 21,600 shares. Despite this, the fund maintains a monthly dividend of $0.058 per share, yielding 5.93%. MQY invests in long-term municipal bonds exempt from federal income taxes, with shares trading near $11.73.3