SHAREHOLDER ALERT: Levi & Korsinsky, LLP Announces Investigation of Arbitron Inc. (ARB) and Class Action Against Hi-Crush Partners LP (HCLP), Align Technology, Inc. (ALGN) and Abiomed, Inc. (ABMD)

Wed Dec 19, 2012 12:25pm EST

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NEW YORK,  Dec. 19, 2012  /PRNewswire/ --  

Arbitron Inc.    
Levi & Korsinsky is investigating the Board of Directors of Arbitron Inc. (NYSE:
ARB) for possible breaches of fiduciary duty and other violations of state law
in connection with the sale of the Company to Nielsen Holdings N.V. (NYSE: NLSN)
for  $48  per share.

Click here to learn more about the investigation 
http://zlk.9nl.com/arbitron-arb/, or call: 877-363-5972.

(Logo:  http://photos.prnewswire.com/prnh/20120409/MM84375LOGO  )

Hi-Crush Partners LP    
Levi & Korsinsky announces that a class action lawsuit has been commenced in the
United States District Court for the Southern District of  New York  on behalf
of investors who acquired Hi-Crush Partners LP (NYSE: HCLP) securities pursuant
to the Company's  August 16, 2012  Initial Public Offering.

For more information, click here:  http://zlk.9nl.com/hi-crush-partners-hclp. 
You have until  January 21, 2013to request that the Court appoint you as lead
plaintiff.

Align Technology, Inc.    
Levi & Korsinsky announces that a class action lawsuit has been commenced in the
United States District Court for the Northern District of  California  on behalf
of investors who acquired Align Technology, Inc. (NasdaqGS: ALGN) securities
between  April 23, 2012  and  October 17, 2012.

For more information, click here:  http://zlk.9nl.com/align-technology-algn/.
You have until  January 28, 2013to request that the Court appoint you as lead
plaintiff.

Abiomed, Inc.   
Levi & Korsinsky announces that a class action lawsuit has been commenced in the
United States District Court for the District of  Massachusetts  on behalf of
investors who purchased Abiomed, Inc. (NasdaqGS: ABMD) stock between  August 5,
2011  and  October 31, 2012.

For more information, click here:http://zlk.9nl.com/abiomed-abmd.    

Levi & Korsinsky is a national firm with offices in  New York  and Washington
D.C.  The firm has extensive expertise in prosecuting securities litigation
involving financial fraud, representing investors throughout the nation in
securities and shareholder lawsuits.  Attorney advertising. Prior results do not
guarantee similar outcomes.

CONTACT:      
Levi & Korsinsky, LLP   
Joseph Levi, Esq.   
30 Broad Street - 24th Floor    
New York, NY  10004    
Tel: (212) 363-7500   
Toll Free:  (877) 363-5972   
Fax: (866) 367-6510 
www.zlk.com    

SOURCE  Levi & Korsinsky, LLP
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