Key TakeawaysCaterpillar reported lower second-quarter revenue than analysts had expected, but net income narrowly beat estimates despite falling from last year.Adjusted profits beat estimates by a wider margin and rose year-over-year.The construction vehicle manufacturer's stock rose following the earnings report's release. Caterpillar (CAT) shares are rising in premarket trading Tuesday as the construction vehicle maker's second-quarter profits beat analysts' estimates, offsetting another quarter of reven ...