European shares slipped on Wednesday as investors remained concerned about whether the outcome of the U.S. debt ceiling negotiations would result in averting a default. Downbeat earnings, led by exchange operators, weighed on the mood. The continent-wide STOXX 600 was down 0.3% as of 0716 GMT, with financial services companies and real estate firms leading declines. Euronext dropped 4.2% after the exchange operator reported a fall in first-quarter revenue and income, while
