Bank of America flags AI-driven market concentration nearing levels last seen in major speculative bubbles.
U.S. equity markets are approaching concentration levels unseen since historic speculative peaks, driven by surging investor enthusiasm for artificial intelligence stocks and anticipated mega-IPOs. The trend mirrors past market booms that preceded sharp corrections or prolonged volatility.
Prior episodes of similar concentration occurred during the dot-com bubble and pre-financial crisis rallies, where narrow leadership eventually led to broad market pullbacks. Current valuations in AI-related sectors have outpaced broader indices, raising concerns about sustainability.
No immediate market reaction was specified, but the warning underscores growing caution among strategists about potential overheating in tech-driven equities.