Shares jump on tech boost; fragile yen on intervention watch

Equities mixed as investors eye earnings; yen on intervention watch By Chris Prentice and Ankur Banerjee NEW YORK/LONDON (Reuters) - U.S. and European shares finished mixed on Wednesday ahead of more corporate earnings this week, and the yen was mired near 34-year lows, keeping traders wary of intervention from Japan. An auction of a record $70 billion worth of five-year U.S. Treasury notes on Wednesday helped to push bond yields higher, pressuring equities. [US/] MSCI's gauge of stocks across the …