Investor Activity Intensifies Around BlackRock MuniYield Pennsylvania Quality Fund Short interest in BlackRock MuniYield Pennsylvania Quality Fund (MPA) surged nearly 59% in March, while Saba Capital Management, a major shareholder, recently trimmed its stake by 0.15%. Despite insider selling, the fund maintains a strong 7.37% yield and continues its decades-long dividend streak, highlighting ongoing investor interest and market volatility.12