The Sensex at the Bombay Stock Exchange rose 152 points, or 0.9 per cent, to 16,335 in opening trade, this morning, on buying by funds and retail investors, as the rupee recovered from record lows in the forex market, and amid firm Asian bourses. But later, the Sensex surrendered all its early gains, and stood 45 points, or 0.3 per cent in the negative zone, at 16,138 in afternoon deals, a short while ago. Other Asian markets in Japan, China, Singapore, Taiwan, South Korea, Hong Kong and Indonesia were up by between 0.8 percent and 1.6 percent, today. Across on Wall Street, the US Dow Jones Industrial Average had ended 1.1 per cent higher in yesterday's trade, after upbeat US housing data and stronger-than-expected corporate earnings. And at the foreign exchange market, the rupee had gained 4 paise, to 54.99 per dollar, when reports last came in. Earlier, in late morning trade, however, the rupee had touched an all-time low of 55.07 against the dollar, on mild selling of dollars by banks.