Institutional investors hold a majority ownership of MPC through the 84.06% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Oil Refining/Marketing industry. Last, during the quarter ended September 2013, these large investors purchased a net $16.4 million shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
VAN ECK ASSOCIATES CORP. Bought 1.8 Million shares of Marathon Petroleum Corp
JPMORGAN INVESTMENT MANAGEMENT, ... Bought 1.4 Million shares of Marathon Petroleum Corp