By Ryan Vlastelica
NEW YORK (Reuters) - Dow component CATERPILLAR (CAT.NY)Inc
The stock rose 6.5 percent to $100.75 before the bell after posting revenue that beat analysts' forecasts. Caterpillar also said that its expectations for 2014 earnings continued to improve.
Also higher in premarket was General Motors Co
On the downside, Yelp Inc
In the broader market, U.S. stock index futures were higher, adding to earlier gains on Caterpillar's results.
(Editing by Bernadette Baum; Editing by Lisa Von Ahn)