Warner Bros/Courtesy Everett CollectionMarket bears may be making their last stand soon.Time may be running out for market bears.After a double-digit rally that took the S&P 500 index to a record on March 1, stocks have sputtered to trade in a tight band of less than a 100 points.That hasn’t given the short sellers, those betting that stocks will fall, much chance to profit and it looks as though their window of opportunity may be closing soon.via