QBIT.SW is trading at CHF 18.41 (-3.68%) as reports of Chinese chipmaker CXMT’s progress on denser 4F² DRAM and plans for server-memory products by year-end raised fears of future competition and pricing pressure for established memory-chip makers.

  • The DRAM index fell 4.32%.
  • Micron fell 4.5% in Tuesday trading; the sector-wide selloff, rather than a broad-market decline, best explains the ETF move.