By Arunima Kumar and Nicole Jao Nov 5 (Reuters) – Oil refiner Marathon Petroleum (MPC.N) reported its third-quarter earnings on Tuesday, beating Wall Street estimates on better-than-expected throughput and utilization rates even as global refining margins decline. The Findlay, Ohio-based company announced an additional $5 billion share repurchase program, and now has $8.5 billion available … Read more