Ciena is trading 6.51% lower at $336.19 amid a broad selloff in technology and AI-linked stocks after September U.S. inflation exceeded expectations, renewing concern about higher interest rates. - Reuters reported that hot inflation and rate fears weighed on tech shares, including AI-related stocks; available reporting points to market pressure rather than a new Ciena-specific catalyst. - Ciena closed October 14 at $359.60, down 10.19%, extending its recent losses; supplied market context also shows technology shares under pressure, consistent with the broader risk-off backdrop.