Tesoro (TSO -5.1%) shares are downgraded to Neutral from Outperform at Credit Suisse, a day...

|By:, SA News Editor

Tesoro (TSO -5.1%) shares are downgraded to Neutral from Outperform at Credit Suisse, a day after it held a meeting with analysts. Analyst Edward Westlake says Tesoro offers substantial upside, but adds, "we still find more upside at peers" such as Marathon Petroleum (MPC -0.7%).