By the Numbers

Jan. 10: Unusual Volume Leaders

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Here's a look at stocks in the S&P 1,500 index that displayed unusual volume in Tuesday's trading session.

S&P 500: Trading volume in Tiffany was up 830 percent over its 10-day average, after the jewelry retailer said Tuesday its sales growth softened in the United States during the holiday season.

S&P MidCap 400:  Health Management Associates volume jumped 1,690 percent over its 10-day average, after its general counsel, Tim Parry, resigned.  The company is currently being questioned over its Medicare practices.

S&P SmallCap 600: Hi Tech Pharmacal volume rose 1,100 percent over its 10-day average, as its Indian rival Wockhardt said it received FDA approval on its Fluticasone nasal spray. 

Here is a look at other companies displaying high volume.  

Follow Giovanny Moreano on Twitter:@giovannymoreano
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