Shares of oil refiners are trading lower after Valero (NYSE:VLO) said it expects Q2 earnings to...

Shares of oil refiners are trading lower after Valero (NYSE:VLO) said it expects Q2 earnings to come in below current estimates. VLO -4.1% AH to ~$33, and several refining peers also are lower: NTI -2.9%, ALJ -2.9%, WNR -2.6%, HFC -2.5%, TSO -2.4%, MPC -2.1%, PSX -1.8%.