In the latest trading session, Valero Energy (VLO) closed at $151.11, marking a +0.69% move from the previous day. This change lagged the S&P 500's 0.77% gain on the day. Elsewhere, the Dow saw an upswing of 0.49%, while the tech-heavy Nasdaq appreciated by 0.95%.The oil refiner's stock has dropped by 9.63% in the past month, falling short of the Oils-Energy sector's loss of 7.24% and the S&P 500's gain of 3.71%.The upcoming earnings release of Valero Energy will be of great interest to investors. The compa ...