Be careful of this time tested value ratio

By Quant Investing You know we recommend that you never use a single ratio to get investment ideas. That is also the reason we designed the screener with four sliders which allows you to quickly and easily combine up to four ratios and indicators (you can use even more if you use filters) to select investment ideas.   An investor I respect This advice was confirmed when I found a very interesting article by James O’Shaughnessy (author of the book What Works on Wall Street) called Price-to-Book Value Ratios: A Long-Term Winner with Long Periods of Underperformance.   You know price…