Aetna, Corning, Tyson Foods are big market movers
| Aetna, Corning, Tyson Foods are among big market movers Friday 
 
 Symbol Price Change
 AET 37.42 +4.15
 
 CSTR 38.96 -5.28
 
 FEIC 32.23 +4.42
 
 GLW 23.37 +0.80
 
 HLIT 9.84 +1.24
 
 
 Aetna Inc., down $4.15 at 37.42
 
 The health insurer will pay the highest dividend in the industry and predicted a much bigger 2011 profit than what Wall Street expected.
 
 Corning Inc., up 80 cents at $23.37
 
 The LCD glass makers expects annual sales to grow more than 50 percent by 2014 because of heavy demand for smart phones, flat-panel TVs and tablets.
 
 Las Vegas Sands Corp., down $4.25 at 46.03
 
 Investors had hoped that the surge in gambling revenue in Macau would translate into even more robust revenue growth for the casino operator.
 
 Tyson Foods Inc., up $1 at $18.56
 
 Rising prices for beef and pork and higher chicken sales pushed the meat producer's quarterly profit up 86 percent.
 
 
 Coinstar Inc., down $5.28 at $38.96
 
 The vending machine and DVD rental kiosk operator said its first-quarter earnings would fall well short of Wall Street expectations.
 
 Harmonic Inc., up $1.24 at $9.84
 
 The video services provider reported results that beat Wall Street's expectations.
 
 JDS Uniphase Corp., up $4.83 at $22.76
 
 The company's test and measurement equipment and fiber-optic components units had strong sales growth in its most recent quarter.
 
 FEI Co., up $4.42 at $32.23
 
 The scientific instrument maker's quarterly net income more than tripled and its outlook bested expectations.
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