The S&P 500’s AI Concentration Risk: Rising Treasury Yields and Extreme Stock Market Valuations
A preview of the Regulus Q4 2026 Financial Astrology Forecast on October 18, 2026.Transcript edited for print. 70% of the S&P’s gains since the March lows came from just 10 stocks. Nvidia alone is about 8% of the index, the highest single-stock weight in more than 50 years. And in July, the correlation between the equal-weight









