Maybe Carl Icahn should try to break up these companies too By: MarketWatch December 30, 2014 at 09:12 AM EST The activist investor is setting his sights on industrial conglomerate Manitowoc Co., writes Phil van Doorn. Read More >> Related Stocks: 3M Co Amazon.com Andersons Inc Apple Brunswick Corp Carlisle Companies Inc Colgate-Palmolive Comcast Corp Corning DuPont USA General Electric Genuine Parts Graham Holdings Company Hawaiian Electric Industries Honeywell International Idexx Laboratories Illinois Tool Works Johnson Controls Leucadia National Loews Corp Macy's National Presto Industries PepsiCo Standard & Poors 500 Synchrony Financial eBay