Asia stocks drop as Europe worries weigh By: MarketWatch July 22, 2012 at 21:19 PM EDT Asian shares drop in early trading, as investors react to renewed concerns about Europe’s debt problems. Read More >> Related Stocks: Bhp Billiton Ltd ADR Daiwa Securities Group Inc Fortescue Metals Group Ltd Jfe Holdings Inc Kobe Steel Ltd Mitsubishi Ufj Financial Group ADR Nippon Steel Corp Pioneer Corp Ord Rio Tinto Plc ADR Sharp Corp Sumitomo Metal Mining Ltd