The Sensex at the Bombay Stock Exchange opened 104 points, or 0.5 per cent higher, at a 32-month high of 20,106 this morning. But the benchmark index later surrendered all its initial gains, on profit-booking, and stood 150 points, in the red, at 19,842, a short while ago. Other Asian markets in Hong Kong, Singapore and Indonesia were up by between 0.4 per cent and 0.8 per cent.