Snapping two day's of losses, the Sensex at the Bombay Stock Exchange rebounded 114 points, or 0.6 per cent, to 20,120 in opening trade this morning, on emergence of buying at lower levels, amid a mixed trend in the Asian bourses. After paring some of its early gains, the Sensex stood 94 points or 0.5 per cent in the green at 20,099, a short while ago.Other Asian markets in China, Japan, South Korea, Hong Kong, Taiwan and Singapore were trading mixed.