Valero Energy (VLO, $157) was one of the top gainers this week, climbing to $157 per share. A.I.dvisor analyzed 51 stocks in the Oil Refining/Marketing Industry over the last week and discovered that of them (6) trended up while of them (3) trended down. A.I.dvisor found 238 similar cases when VLO's price jumped over within one week. In out of those 238 cases, VLO's price went up during the following month. Based on these historical data, A.I. thinks the odds of an Uptrend continuation for VLO are