Marathon Petroleum (MPC) is trading sharply lower (about -4% to $217.72) as the market rotates out of refiners on fresh concerns that near-term crack spreads and margin capture are cooling after a volatile run. With April 17 options expiration in focus, the tape also reflects defensive hedging and de-risking across the energy/refining complex into key near-term catalysts.

The most recent material company update is Marathon’s April 13, 2026 Form 8-K (period of report April 7, 2026), which disclosed a new $5.0 billion unsecured revolving credit agreement maturing April 7, 2031, replacing the prior 2022 facility. The filing states the revolver is intended for general corporate purposes and notes there were no borrowings outstanding at termination of the old facility and none outstanding under the new facility at the filing date, alongside a preliminary cash and cash equivalents figure as of March 31, 2026. (sec.gov)

A new revolver can strengthen liquidity, but it doesn’t directly fix what matters most for a refiner’s next-quarter earnings: realized margins and utilization. Today’s selling pressure looks more consistent with macro-and-industry margin anxiety—investors repricing refining profitability as product cracks and commodity volatility drive wide swings in earnings expectations—plus mechanical flows as traders reposition into expiration.

Near-term direction likely hinges on whether U.S. gasoline and diesel cracks stabilize and on any operational updates that would shift throughput, yields, or downtime expectations. Investors will also watch whether capital returns (buybacks/dividends) stay on track as the company balances shareholder payouts against working-capital swings and margin volatility. (ir.marathonpetroleum.com)