Deep-pocketed investors have adopted a bearish approach towards Marathon Petroleum (NYSE:MPC), and it's something market players shouldn't ignore. Our tracking of public options records at Benzinga unveiled this significant move today. The identity of these investors remains unknown, but such a substantial move in MPC usually suggests something big is about to happen.

We gleaned this information from our observations today when Benzinga's options scanner highlighted 15 extraordinary options activities for Marathon Petroleum. This level of activity is out of the ordinary.

The general mood among these heavyweight investors is divided, with 46% leaning bullish and 53% bearish...