Semiconductor Materials Stocks Slip as NSIG, Xi'an EpiLight Drop Over 8%
Shares in the semiconductor materials sector fell in volatile trading on August 20, 2026. National Silicon Industry Group (NSIG) and Xi'an EpiLight each declined more than 8 percent, the sharpest falls among constituents. Seven other listed peers, including Youyan Silicon, Youyan New Materials, Kaide Quartz, Kema Technology, Shengong, Yoke Technology and Qingyi Optoelectronics, also dropped in tandem, dragging the sector broadly lower.
The semiconductor materials sector traded lower on a volatile note on August 20, 2026. National Silicon Industry Group (NSIG) and Xi'an EpiLight both fell by more than 8 percent. Shares of Youyan Silicon, Youyan New Materials, Kaide Quartz, Kema Technology, Shengong, Yoke Technology and Qingyi Optoelectronics also declined in sympathy with the sector's downward move.