Warning Signs in US Stocks: Market Breadth Divergence Hits Alarming Levels Amid AI Concentration

TLDR The S&P 500 recorded 52 market breadth divergence days in 2026, matching the 2000 peak. A small group of AI-linked megacap stocks continues to support the broader index. The VIX stayed below 20, while single-stock volatility measured by VIXEQ rose above 50. Alphabet and Tesla earnings could test confidence in heavy corporate AI spending. [...]

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