P/E ratios are far more useful for indicating the direction of the market in the long term, an LPL Financial equity strategist wrote in a research note. Going back to 1990, the S&P 500's P/E ratio has ...

The price-to-earnings (P/E) ratio has long held a lock on investors’ imaginations. So when it jumps to near 30, like it has in the last few weeks, they’re inclined to think stocks are pricey and pull ...