Recovering partially from initial losses, the Sensex at the Bombay stock Exchange stood 121 points, or 0.7 per cent in negative territory, at 18,375 in afternoon deals, a short while ago. Earlier in the morning, however, the Sensex had opened 204 points, or 1.1 per cent in the red, at 18,292, as funds and retail investors booked pofits, amid weakness in the regional markets.Key stock indices in Japan, China, Hong Kong, Indonesia, Singapore, South Korea and Taiwan had lost between 0.5 percent and 1.7 percent, today, after Japanese exports dropped for a third straight month. But the US Dow Jones Industrial Average had gained 0.1 per cent in yesterday's trade.