Billionaire money manager Ken Fisher just weighed in with a surprising message in the "are stocks overvalued" and "should you care" debate. His opinion: price-to-earnings ratios, or P/E ratios, aren't nearly as important as most believe. At first blush, it seems an unconventional take. We've all heard the argument: stocks are overvalued, suggesting a reckoning looms. The argument primarily focuses on price-to-earnings (P/E) ratios, which serve as a gauge for investors to determine whether a stock is under ...