MACOM is trading 4.09% lower at $242.09 as concerns that heavy AI infrastructure spending may not deliver sufficient returns weigh on chip stocks. - Reuters reported that AI-spending worries were weighing on technology and chip stocks after Alphabet’s results and after-hours declines in Amazon and Intel. - No fresh MACOM-specific catalyst was identified; the move follows a 3.26% decline at the October 29 close, with the semiconductor sector also weaker in pre-market trading. - MACOM has scheduled its fiscal fourth-quarter results for November 5, rather than announcing results overnight.