Institutional investors purchased a net $5.1 million shares of MPC during the quarter ended March 2017 and now own 79.77% of the total shares outstanding. This majority interest is a greater percentage than is typical for companies in the Oil Refining/Marketing industry and highlights that the smart money sees this stock as an important holding.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
IRIDIAN ASSET MANAGEMENT LLC Bought 5.2 Million shares of Marathon Petroleum
AJO LP Bought 3.9 Million shares of Marathon Petroleum
AMERICAN CENTURY INVESTMENT MANA... Bought 2.0 Million shares of Marathon Petroleum