The Nasdaq Composite surged to 23,986 on Wednesday its highest level since early November coming within points of a new record. The last record close was 23,958.47 on Oct. 29, just before Big Tech earnings reignited debate about an AI bubble.
This time, investors appear less concerned about bubble risks and more focused on the booming businesses powering AI infrastructure. Strong earnings reports from companies supplying AI technology have reinforced confidence that the sector’s growth is far from slowing down, pushing the Nasdaq back toward record territory.
The AI-driven rally lifted major indexes to record highs last year, but fears of overspending on AI infrastructure dragged tech stocks lower in the final months. Now, the Nasdaq has nearly recovered from those losses. However, upcoming earnings reports could reignite Wall Street’s debate over whether the AI boom is sustainable or if bubble risks are resurfacing.
A shortage of memory and data storage technology has boosted earnings for chipmakers like Micron, Sandisk, and Western Digital, while soaring demand for advanced semiconductors has lifted equipment suppliers such as Lam Research and Applied Materials. Taiwan Semiconductor Manufacturing (TSMC) reported record revenue and is dramatically expanding infrastructure investments, further fueling the rally.
ASML Holdings added momentum with record quarterly orders, while Corning shares jumped 16% after striking a $6 billion deal to supply Meta with fiber optic technology for its data centers. Together, these moves highlight how the AI infrastructure boom is driving growth across the semiconductor and tech supply chain.
Wednesday’s earnings highlighted a critical risk for the AI rally: sky-high expectations. GE Vernova shares swung despite raising long-term sales outlooks, while Amphenol was the S&P 500’s worst performer even after beating estimates showing how elevated valuations leave little room for upside surprises.
The real test comes tonight, when Microsoft and Meta report results. Both pledged in October to significantly boost AI infrastructure investments. Investors will be watching capital expenditures closely, but the most important question is whether Big Tech can prove that massive data center spending is translating into real returns.
The AI infrastructure boom has reignited momentum in chipmakers and suppliers, pushing the Nasdaq back toward record highs. Yet with valuations stretched and investor expectations sky-high, earnings from Microsoft and Meta will be the real test. If Big Tech can prove that massive AI spending is delivering returns, the rally could extend. If not, bubble concerns may resurface quickly.