Europe stocks edge up, led by Lanxess, Rio Tinto By: MarketWatch December 16, 2011 at 04:02 AM EST Europe stocks rise Friday but are still poised for weekly losses. Lanxess gains on a broker upgrade and miners also contribute to gains. Read More >> Related Stocks: Barclays Plc ADR Bayer Aktienges ADR Bhp Billiton Ltd ADR Credit Suisse Group ADR Deutsche Bank Ag Novartis Ag ADR Rio Tinto Plc ADR