UPDATE: Marathon Petroleum Posts Upbeat Q4 Earnings

Marathon Petroleum (NYSE: MPC ) reported a 17% drop in its fourth-quarter earnings. Marathon Petroleum's quarterly profit fell to $626 million, or $2.07 per share, from a year-ago profit of $755 million, or $2.24 per share. Excluding special items, it earned $2.10 per share. Its revenue climbed 20% to $24.93