A new leader emerged in the final week of TheStreet.com's Beat the Street contest, using a mostly short-airline portfolio."GWT2001" took the lead on four airline shorts and short bets on a chemical company and greeting card maker. The portfolio, which totaled $291,234.94 at the close of trading Wednesday, consists of UAL ( UAUA), Northwest Airlines ( NWA), Delta Air Lines ( DAL), Continental Airllines ( CAL), Sociedad Quimica Y Minera De Chile ( SQM) and American Greetings ( AM). Airline plays -- both long and short -- have been a common theme in the 12-week contest. In second place was "Hantongjin," whose portfolio of $288,738.56 was short five airlines and one bank, Washington Mutual ( WM). "Redlight," the leader the first two days of the week, dropped to third with a portfolio total of $288,383.86. The contestants are playing for a $5,000 prize.