Semiconductor manufacturing supplier AXT Inc. (AXTI) - Get AXT, Inc. Report was up 19.8% in midmorning after posting first-quarter earnings Wednesday of 22 cents a share, beating analysts' estimates by 1 cent and up from 10 cents a year ago. Revenue rose 80% to $40.1 million over the same period last year. The company said second-quarter revenue and EPS are expected to grow 2% to 6% over the first quarter.

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