nLIGHT is trading 10.58% down at $29.50 on November 5 as semiconductor shares sell off broadly. - Investors worry tighter data-center rules following the midterm elections could slow AI infrastructure investment. - Weak Qualcomm guidance has pressured chip stocks; available reports cite no distinct company-specific announcement explaining nLIGHT’s move. - nLIGHT is scheduled to report third-quarter results after the market close on November 5; results were not yet available at the 12:04 p.m. update.