One of today's notable stocks in decline is Sina (NASDAQ:SINA), down 6.8% to $73.40. The S&P is trading fractionally higher to 1,165 and the Dow is trading 0.5% higher to 11,181.

Potential upside of 64.7% exists for Sina, based on a current level of $73.40 and analysts' average consensus price target of $120.88. The stock should find initial resistance at its 50-day moving average (MA) of $95.75 and further resistance at its 200-day MA of $99.05.

In the past 52 weeks, Sina share prices have been bracketed by a low of $48.50 and a high of $147.12 and are now at $73.40, 51% above that low price. Over the last five market days, the 200-day moving average (MA) has remained constant while the 50-day MA has declined 3.2%.

SINA Corporation is a global Internet media company operating Chinese-language destination sites. The Company offers a network of branded content and services targeting people of Chinese descent worldwide. SINA.com offers online news, entertainment, community, and commerce through web sites that are produced and updated by local teams in China, Hong Kong, Taiwan, and North America.