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Mag-7 Now 38% of S&P 500; Tech Breadth Collapse Deepens as Yields Spike

The top 7 mega-cap stocks now represent 38% of the S&P 500's total market capitalisation. With bond yields accelerating higher, growth stocks face valuation pressure while market breadth deteriorates, exposing concentration risk that could amplify any equity correction.

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Mag-7 Now 38% of S&P 500; Tech Breadth Collapse Deepens as Yields Spike has gained +0% in mention volume over the past 24 hours. Sentiment is skeptical. Coverage is led by tier-1 financial press with cross-platform amplification.