Caterpillar Inc. (NYSE:CAT) stock is up 3.2% to trade at $326.79 at last check, after the blue chip reported better-than-expected earnings and revenue for the second quarter. The company noted higher prices for larger excavators and equipment offset slower demand in North America.The shares are bouncing off a familiar floor at $310, which served as a launching pad in February to their April 8, record high of $382.01. While CAT has cooled from that peak, it looks to be relying on support from the 200-day mov ...