Receive E-mail Alerts Stock Quote | Stock Chart | Historical Price Lookup | Investment Calculator | Dividend Information | How to Invest in Valero | Trading Statistics VLO (Common Stock) Exchange NYSE (US Dollar) Price $16.47 Change (%)   0.11 (0.67%) Volume 12,711,900 Today's Open $16.60 Previous Close $16.36 Intraday High $16.74 Intraday Low $16.36 52 Week High $26.20 52 Week Low $14.30 Data as of 11/20/09 4:00 p.m. ET Minimum 20 minute delay Refresh quote Click for historical price lookup for PCO from 4/30/2002 - 8/29/2005 Click for historical price lookup for UDS from 12/4/96 - 12/31/01 Copyright © 2008 MarketWatch, Inc. All rights reserved. Please see our Terms of Use. Designed and powered by Dow Jones Client Solutions Intraday data provided by Interactive Data Real Time Services and subject to the Terms of Use. Intraday data is at least 20-minutes delayed. All times are ET. Historical and current end-of-day data provided by Interactive Data Pricing and Reference Data. Minimum 20 minutes delayed