Sumco’s operating margin grew 6.4% sequentially and 11.9% y-o-y to 25.3%.

Together, Shin-Etsu and Sumco have over 50%  market share .

GlobalWafers, the No.3 supplier, had a Q1 operating margin of 28.2%.

Wafer supply, particularly for 8- and 12-inch, will remain tight for two years, says Digitimes Research.