AI-related stocks reach 45% of S&P 500 market cap, up 20 points since November 2022
AI-related stocks now account for a record 45% of the S&P 500’s market capitalization, marking a significant increase of 20 percentage points since the launch of ChatGPT in November 2022. This rise reflects a broader trend in which AI has emerged as a dominant force in US equity markets, surpassing
