Jim Cramer Shares His Thoughts On Twitter, Caterpillar And Dominion Energy

Jim Cramer said on CNBC's "Mad Money Lightning Round" that Twitter Inc TWTR didn't have a perfect quarter, but it's now down so much that he would buy it.

Dominion Energy Inc D is still a buy, said Cramer. He added that it's doing incredibly well.

Instead of Caterpillar Inc. CAT, Cramer would buy United Rentals, Inc. URI. He's concerned that a tweet could hurt Caterpillar.