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)

Bloomberg:
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  —  Three years ago, OpenAI released ChatGPT, setting off a mania on Wall Street for all things artificial intelligence.