Kadant Inc. (NYSE: KAI) gained 13.6% Thursday to $23.64, on share volume of 612,000, or 15 times its all-day average, after announcing Q4 revenues of $73.3 million, an increase of $16.5 million, or 29% over last year.

Micron Technology Inc. (Nasdaq: MU) traded Thursday in 24.5 million shares, closing in on a daily average of 36.9 million. MU shares picked up 1% to $10.65.

AXT Inc. (Nasdaq: AXTI) demurred 17.5% to $6.90 Thursday, on share volume of 3.1 million, more than four times its daily average, after reporting full-year earnings of $18.7 million on revenue of $95.5 million. In 2009, it lost $1.9 million on revenue of $55.4 million.