Check out which companies are making headlines after the bell Monday:
CalAmp - The provider of wireless communications applications posted third-quarter earnings per share and revenue that beat estimates, but its shares slid in after-hours trading after its fourth-quarter guidance disappointed.
Stratasys - Shares of the maker of 3D printers gained after Gabelli's Heni Susanto upgraded its shares to buy from hold.
—By CNBC's Kate Gibson.
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