 Armstrong Shaw Associates Inc. CT decreased its holdings in Comcast Co. NASDAQ:CMCSA by 1.4 during the first quarter, HoldingsChannel.com reports. The institutional investor owned 91,013 shares of the cable giants stock after selling 1,261 shares during the quarter. Comcast accounts for 4.0 of Armstrong Shaw Associates Inc. CTs portfolio, making the stock its 9th largest ... 