Monday, the semiconductor equipment and materials sector was active. As of the time of writing, AXT Inc (AXTI.US) jumped more than 10%, Applied Materials (AMAT.US) and Emax Technology (AMKR.US) rose more than 4%, Lam Research (LRCX.US) gained more than 1%, KLA (KLAC.US) rose more than 1.5%, and Teradyne (TER.US) climbed more than 2.8%.