Backed by smart gains in the global markets the Sensex opened with a positive gap of 63 points at 11,724, and then did not bother to look. All round buying in the market saw the index rally to higher levels as the day progressed.Agressive buying in auto and banking stocks saw the index touch a high of 11,938 - up 277 points from its previous close. The Sensex finally settled with a gain of 2% (233 points) at 11,894.