Yen posts biggest weekly gain since 2008, stocks fall

By Herbert Lash NEW YORK (Reuters) - The yen hit an 18-month high on Friday as investors bet the Bank of Japan might be done adding fresh stimulus to the economy, while stocks in Europe and Wall Street headed lower as earnings failed to inspire higher valuations. U.S. equities fell about 0.7 percent, following declines in Europe where major stock indexes fell 2 percent or more. The yen was on track for its biggest weekly gain since the 2008 financial crisis, also spurred by a weak reading of U.S