Stock traders in New York on Friday.

Stock traders in New York on Friday. Credit: AP

Here are two Long Island companies whose stocks moved significantly during the week ending March 18, 2011.

Frequency Electronics
(FEIM)
Mitchel Field  
$10.72 (week's change: +19.5%) 
52-week return: +105.8%
Shares of the maker of timing and synchronization equipment used in satellites hit a 3 1/2-year high. Since releasing a strong earnings report March 9, FEIM stock has surged 34 percent.

Chyron
(CHYR)
Melville
$2.10 (week's change: -21.6%)
52-week return: -6.3%
The provider of broadcast graphics systems posted lower fourth-quarter sales compared to a year earlier. Separately, Chyron said its chief operating officer will resign.

Shown above are traders on the floor of the New York Stock Exchange on Friday.

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