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March 19: Unusual Volume Leaders

What follows is a look at stocks in the S&P 500 displaying unusual volume in today's trading session.

Some of the highlights include: Rockwell Collins (ROK), Aetna (AET), Adobe Systems (ADBE) and Genzyme (GENZ).

>> Highest Dividend Yields of the Dow

Symbol
Price
 
Change
%Change
CFNLX
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AET
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COL
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CTAS
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DTV
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Symbol
Price
 
Change
%Change
CFNLX
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XCS
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COL
---
CTAS
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F
---
PCP
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SWN
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