 Hennessy Advisors Inc. trimmed its position in Argo Group NASDAQ:ARGO by 3.5 during the 4th quarter, according to its most recent filing with the Securities and Exchange Commission SEC. The fund owned 39,100 shares of the companys stock after selling 1,400 shares during the quarter. Hennessy Advisors Inc.s holdings in Argo Group were worth 2,571,000 ... 