COHH is trading at $4.88, down 9.22%, as a broad semiconductor and AI-linked technology selloff weighs on Coherent and its optical-networking peers. - Investors are questioning AI valuations, spending returns and Chinese competition. - Reports of advances by China’s CXMT added pressure on major chipmakers. - COHH targets 2× the daily move in Coherent (COHR), so weakness in its underlying stock can magnify the ETF’s decline.