 Hennessy Advisors Inc. boosted its stake in shares of JPMorgan Chase Co. NYSE:JPM by 13.9 in the 3rd quarter, HoldingsChannel reports. The institutional investor owned 66,300 shares of the financial services providers stock after acquiring an additional 8,100 shares during the quarter. Hennessy Advisors Inc.s holdings in JPMorgan Chase Co. were worth 6,383,000 ... 