Updated

The Nasdaq's rapid ascent to record highs is prompting analysts to caution investors against waiting for a pullback before buying in, with some pointing to improving underlying fundamentals supporting the rally. The move reflects broader strength in tech and AI-related shares driving major indexes higher. Strategists say the current environment, marked by strong earnings and AI-driven optimism, differs from prior speculative run-ups, though views remain divided on how sustainable the pace of gains is.