 BNP Paribas Arbitrage SA lessened its holdings in shares of PacWest Bancorp NASDAQ:PACW by 24.8 during the 1st quarter, according to its most recent disclosure with the SEC. The fund owned 23,644 shares of the financial services providers stock after selling 7,779 shares during the period. BNP Paribas Arbitrage SAs holdings in PacWest Bancorp were ... 