The Sensex at the Bombay Stock Exchange dropped 159 points, or 1 percent, to 16,008, today. The Nifty at the National Stock Exchange fell 46 points, or 1 percent, to 4,805.US stocks zoomed, yesterday, following an impressive start to the U.S. holiday shopping season and on some renewed hope that the European Union's sovereign debt crisis has some fixes in the works. So the Dow Jones Industrial Average shot up 291 points, or 2.6%, to 11,521.The Nasdaq Composite index gained 86 points, or 3.5%, to 2,526. And the S&P 500 gained 34 points, or 2.9%, to 1,192. Bolstering the market, reports indicated that European officials have reached an agreement on how to leverage the euro zone's 586 billion dollar European Financial Stability Facility, ahead of today's meeting of European finance ministers.The fund might insure the bonds of debt-torn nations with guarantees of as much as 30% of each issue. Yields reflecting Spain's and France's borrowing costs fell. In economic news, holiday sales data showed U.S. retail sales totaled 52.4 billion dollars during the holiday weekend, with the average shopper spending 398.62 dollars, up from 365.34 dollars for the year-earlier period.Also, the US government reported that sales of new single-family homes rose 1.3% in October, to a yearly rate of 307,000. September sales were revised down to 303,000, from a first read of 313,000.