Advanced Energy is trading 10.89% lower at $220.59, with the decline appearing mainly tied to semiconductor-equipment weakness. - No company-specific announcement explaining the decline was identified; the latest listed news was an October 19 notice that third-quarter results are scheduled for November 2. - Lam Research fell after its outlook disappointed investor expectations, while other chip-equipment shares and the semiconductor ETF also declined. Broader technology-market weakness is adding pressure.