Implied volatility in Valero
Valero Energy (VLO) reported earnings on July 27, 2017, and the implied volatility in VLO stock fell 2.7% from the previous day’s 21.7%. However, this is still higher than the 30-day average implied volatility, which stood at 21.4%.
On the same day, Valero stock price fell 0.6%.
Peer implied volatility
Like VLO, the implied volatility in Delek US Holdings (DK) fell 1.1% from the previous day to 40.2% on July 27. But the implied volatilities in Tesoro (TSO) and HollyFrontier (HFC) stocks rose 0.9% and 1.5%, respectively, to 23.5% and 33.2%, respectively, on July 27.
Notably, HFC’s stock price rose 0.9% on July 27, while TSO and DK stock prices fell 0.1% and 1.4%, respectively, that day.
On July 27, DIA rose 0.4%, while SPY fell 0.1%.
Expected price range for 8-day period ending August 4
If we consider Valero’s implied volatility of 21.7% and assuming a normal distribution of prices (bell curve model) and standard deviation of one (with a probability of 68.2%), Valero’s stock price could close between $69.8 and $65.4 per share in the eight-day period after its earnings release on July 27 (ended August 4).