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SpaceX IPO at $200-250B Valuation Could Push S&P 500 Top-10 Concentration Past 45%

BofA strategist Michael Hartnett warns that a SpaceX listing at the anticipated scale, combined with a potential OpenAI offering, risks driving mega-cap tech weight in major indices to levels not seen since the 1920s. Equal-weighted benchmarks are already flat YTD versus cap-weighted gains, and a debut priced on brand

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SpaceX IPO at $200-250B Valuation Could Push S&P 500 Top-10 Concentration Past 45% has gained +0% in mention volume over the past 24 hours. Sentiment is constructive. Coverage is led by tier-1 financial press with cross-platform amplification.