A look at ChatGPT's impact on US stocks three years after its release: AI mania revived Big Tech, making an already concentrated S&P 500 even more top heavy

bloomberg.com/news/articles/2025-11-25/three-years-of-ai-mania-how-chatgpt-reordered-the-stock-market?accessToken=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzb3VyY2UiOiJTdWJzY3JpYmVyR2lmdGVkQXJ0aWNsZSIsImlhdCI6MTc2NDM5MjMxMiwiZXhwIjoxNzY0OTk3MTEyLCJhcnRpY2xlSWQiOiJUNjFBTEJUOTZPU1MwMCIsImJjb25uZWN0SWQiOiIwNEFGQkMxQkYyMTA0NUVEODg3MzQxQkQwQzIyNzRBMCJ9.ypePZpUZJoUcwg5_H5vuFwHDCIgYQSi_-fuuRO42B_k

This story appeared on bloomberg.com, 2025-11-29 07:37:09.274000.
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