Exchange Traded Concepts LLC boosted its holdings in shares of Marathon Petroleum Corporation (NYSE:MPC – Free Report) by 74.2% during the 4th quarter, according to its most recent disclosure with the Securities and Exchange Commission. The firm owned 9,884 shares of the oil and gas company’s stock after buying an additional 4,210 shares during the period. Exchange Traded Concepts LLC’s holdings in Marathon Petroleum were worth $1,607,000 as of …