Valero Energy ( $VLO ) Advances +21% in Recent 30 Days as Refining Margins Hit Highs (See the latest news for any ticker on Tickeron.) Valero Energy shares rose roughly 21% over the trailing 30 days, climbing from about $341.51 to $413.28. The advance extends a broader rally, with the stock up nearly 75% over the last quarter. Record second-quarter refining margins, driven by global supply disruptions, remain the core catalyst. $MPC $PSX $DINO $DK $PBF