Thoughtful Money with Adam Taggart · Tuesday, July 14, 2026
Fred Hickey, editor of The High-Tech Strategist, believes the US is currently experiencing the greatest stock market bubble in history, exceeding even the dot-com era. He notes that AI-linked stocks now represent a record 45% of the S&P 500's market capitalization and are responsible for nearly all of its gains this year.
“Well, I'm in complete agreement with Jeremy Grantham that we're in the greatest bubble in US stock bubble in US history.”
“AI-linked stocks account for a record 45% of the S&P 500s total market capitalization, and they drive nearly all of the gains it's had for the year so far.”
“These companies make up an even higher percentage, nearly 70% of the Nasdaq 100s market cap.”