The stock fell on Wednesday as investors locked in gains following its sharp rally driven by AI chip-related momentum. • Qualcomm stock is showing notable weakness. Why are QCOM shares down?Qualcomm Expands Into AI Data-Center InfrastructureBloomberg reported Tuesday that Qualcomm reached a deal to supply TikTok parent ByteDance with application-specific integrated circuits (ASICs) for AI data centers.According to the report, ByteDance plans to purchase millions of Qualcomm chips to support its AI agent software initiatives, marking another step in Qualcomm's push beyond smartphone processors and into AI infrastructure markets.Traders Weigh AI Opportunity Against Market PullbackDespite the ByteDance headline, Qualcomm underperformed some semiconductor peers amid broader market weakness, with the Nasdaq falling 0.5% and the Russell 2000 declining 0.3%, while the Communication Services sector gained 0.8%.The muted reaction suggested traders may have already priced in much of Qualcomm's AI upside following the stock's recent strength, leading to stock-specific profit-taking even after positive news.Qualcomm Pushes Beyond Smartphones and Wireless ChipsQualcomm remains one of the world's largest wireless-chip suppliers, generating revenue from both semiconductor sales and licensing technology tied to 3G, 4G, and 5G standards, including CDMA and OFDMA.In addition to smartphones, the company sells RF front-end modules and chips for automotive and Internet of Things applications.The ByteDance agreement highlights Qualcomm's broader strategy to expand into AI infrastructure and diversify beyond its traditional handset business as demand for AI computing continues to accelerate.Earnings & Analyst OutlookLooking further out, the next major catalyst for the stock arrives with the July 29 (estimated) earnings report.