Snapping a week-long losing streak, the Sensex at the Bombay Stock Exchange jumped 260 points, or 1.6 percent, to 17,029 points, in opening trade, today, on buying by foreign funds, amid a firm trend in the Asian markets. Gaining further ground, the Sensex stood a massive 474 points, or 2.8 percent in the green, at 17,243, a short while ago. Stocks rose on the back of a strong recovery in the Asian bourses, on reports that the European Union has agreed on a 500 billion euro emergency fund to prevent Greece's debt-crisis from spreading to other countries. So key benchmark indices in Japan, China, Hong Kong, Indonesia, South Korea, Singapore and Taiwan were up by between 0.3 percent and 2.8 percent.