Long Island companies whose stocks made significant moves for the week ending Oct. 15, 2010.

Veeco Instruments

(VECO)
Plainview  
$40.43 (week's change: +10.7%) 
52-week return: +57.7%
Shares of the manufacturer of equipment used by LED makers rose after a General Electric executive told Bloomberg News that GE will continue to invest heavily in new LED technologies.

Bovie Medical

(BVX)
Melville  
$1.87 (week's change: -11.8%) 
52-week return: -79.1%
The electrosurgical device maker, beset by a patent-infringement suit and other woes, hit a five-year low. Bovie is the worst performing local stock in 2010, down 76 percent.

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