This article was automatically generated by Dow Jones using technology from Automated Insights.
Shares of Valero Energy Corp. slid 4.1% to $377.14 on what proved to be an all-around mixed trading session for the stock market, with the S&P 500 Index remaining mostly unchanged at 7,764.64 and the Dow Jones Industrial Average falling 0.4% to 51,863.69.
This was the stock's second consecutive day of losses.
Valero Energy Corp. closed 10.0% below its 52-week high of $419.04, which the company achieved on September 21st.
The stock underperformed when compared to some of its peers, as ExxonMobil Holdings Corp. rose 0.3% to $158.71, Chevron Corp. fell 0.6% to $202.41, and ConocoPhillips fell 1.77% to $125.27.
Trading volume totaled 7.4 million, compared to the 50-day average of 2.9 million.
Data source: Dow Jones Market Data, FactSet