Oil industry warns a diesel export ban will raise fuel prices as Trump weighs restrictions

Marathon Petroleum (MPC) has risen 143% in 2026 due to tight refining margins. Goldman Sachs raised its price target to $472, citing strong earnings and favorable market conditions. MPC's Q2 profits quadrupled to $5.14B, with high margins and cash returns to shareholders. However, the stock's valuation may be vulnerable to margin normalization.

Wall Street analysts highlighted energy, AI infrastructure, and agriculture as key themes. BP (BP) and Chevron (CVX) were upgraded, while TotalEnergies (TTE) saw mixed views. Marathon Petroleum and Akamai (AKAM) were noted for AI infrastructure. Deere & Company (DE) rose on crop price expectations. Moderna (MRNA) faced polarizing views ahead of trial results.

Marathon Petroleum's stock fell 3.16% on Tuesday due to a potential U.S. diesel export ban and a Jefferies analyst downgrade. The White House is considering the ban to lower domestic diesel prices, while Jefferies' Lloyd Byrne downgraded Marathon to 'hold' with a $413 price target, citing valuation and risks from rising diesel prices. Marathon is a major U.S. oil refiner with significant diesel exports.

Valero Energy's shares declined after Jefferies downgraded the stock to 'Hold' from 'Buy' with a price target of $401. The company's shares have fallen 3.88% in the last 5 days and 4.46% year-to-date, despite a 133.02% increase over a longer period.

Marathon Petroleum (MPC) shares fell after Jefferies downgraded the stock to 'Hold' from 'Buy' with a price target of $413. The stock has declined 2.42% in the past 5 days and 4.70% year-to-date, despite a 140.75% increase over a longer period.

Jefferies downgraded Valero Energy and Marathon Petroleum to Hold from Buy, setting price targets of $401 and $413, respectively. The firm cited stretched valuations after recent gains. Both stocks traded lower on the news.