Reliable internal measures tell a story investors need to know
Anyone who enjoys eating fruit knows there’s a fine line between ripe and over-ripe. If it sits in the fruit bowl too long, over-ripe turns rotten. As experienced investors know, the stock market goes through similar phases. An overbought, or over-ripe, market can spoil quickly.

Take a look at this chart for example (wave labels removed), and ask yourself, is the stock market on the verge of spoiling?