SINA (SINA) is down 6.6% intra-day following a DigiCha report that the Chinese government will require real name registration for Sina Weibo as of March 16, causing new registrations to drop dramatically. Today's action follows a drop yesterday of over 6%, putting the stock down over 12% this week. SINA is trading down 4.57 to 65.51.
European stocks rose for a third straight session on Monday and the euro bounced back from two-year lows, as Greek …



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