UBS initiated coverage of the U.S. media and entertainment sector with a neutral rating. But it gave buy ratings to Walt Disney (DIS), 21st Century Fox (FOX) and Time Warner (TWX), citing their potential to weather the industry's upheaval. UBS cited Disney's low U.S. advertising exposure and solid start to the ABC TV season, Fox's strong int'l network and Time Warner's long-term movie lineup and TV pipeline as among their strengths. Disney shares rose fractionally. Fox and Time Warner both fell around 1%.