Caterpillar's (NYSE:CAT) short percent of float has risen 3.03% since its last report, with 6.93 million shares sold short, which is 1.36% of all regular shares available for trading. This increase in short interest can signal that investors have become more bearish. However, Caterpillar's peer group average for short interest as a percentage of float is 4.98%, which means the company has less short interest than most of its peers.