Indian stocks opened higher Monday with the benchmark index of the Indian equities market Sensex opening at 20,438.87 points, 72.05 points or 0.35 percent up from the previous close of 20,366.82.49 points. The Sensex has been on an upswing trend following positive trend seen in other Asian markets, while investors will keep a close eye on interim budget which will be presented by the Finance Minster later in the day.