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Railroad operator CSX Corp. (NYSE: CSX) reported second-quarter earnings per share (EPS) of $0.52 on revenues of $3.1 billion. The consensus estimate called for EPS of $0.47 on revenues of $3.02 billion. The company provided little detail, but said it would reveal all in its conference call tomorrow morning. The shares are up 3.8% in after-hours trading at $25.58 in a 52-week range of $18.88 to $26.36.

Yahoo! Inc. (NASDAQ: YHOO) reported adjusted second-quarter EPS of $0.35 and revenues of $1.07 billion excluding traffic acquisition costs. Shares are down about 2%. Our coverage of the earnings release is here.

Industrial machinery maker Gardner Denver Inc. (NYSE: GDI) announced that shareholders overwhelmingly approved the company’s merger agreement with Kohlberg Kravis Roberts & Co LP. (NYSE: KKR) for $76 a share. The deal is expected to close later this month or early in August.

United Rentals Inc. (NYSE: URI) reported adjusted EPS of $1.12 on revenues of $1.21 billion, compared with the consensus estimates for EPS of $1.01 on revenues of $1.23 billion. Shares are down about 2% in after-hours trading, at $50.00 in a 52-week range of $26.88 to $59.74.