Shares of construction-equipment maker Caterpillar Inc. (NYSE:CAT) are 3.5% lower at 387.97thismorning,aftersufferingabearnotefromMorganStanley.TheWallStreetanalystdowngradedCATto"underweight"from"equalweight"andlowereditspricetargetto332 from $349, citing mounting pressure on the firm's construction industries segment and the equity's negative risk-reward profile.Coming into today, analysts were divided on Caterpillar stock. Of the 21 in coverage, eight still carried a "buy" o ...