Big tech now half of S&P 500 market cap, making scandals a systemic risk
GaryMarcus · x · 2026-11-11
Ian Bremmer notes big tech now accounts for roughly half of S&P 500 market cap; Gary Marcus amplifies the point that scandals at any one giant (Nvidia/Jensen Huang cited as the timeliest example) are no longer one company's problem — they hit the entire market. The accompanying chart shows tech's sector share climbing past even dot-com-era levels.
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