Celestica is trading 5.4% down at CA$445.59 as the broader technology sector experiences a pullback and investors grow increasingly concerned over stretched AI-related valuations. - The stock's decline is part of a wider sell-off in memory and AI-related chip stocks today. - This follows a period of significant growth for Celestica, with recent analyst commentary highlighting mixed sentiment regarding its valuation after a strong Q1 2026 performance and raised outlook. - The overall market is showing renewed weakness in technology stocks, with some analysts noting a risk-off pullback in AI-adjacent hardware names.