The Correlation Between Stocks and the 30-Year Treasury Is Getting Stronger

The correlation between the daily returns of the stock market and the daily changes in 30-year Treasury yield over a rolling 10-day window is negative 0.903. Correlations are always between 1 (positive) and -1 (negative) and higher the absolute value, stronger the relationship. Back on April 9, the correlation stood at 0.007, which means there was almost no statistical relationship between the yields and stocks.