Price Factors
This is an intermediate-term momentum measure similar to the 3-month and 6-month versions. You can find a reference to an academic paper in Price Index 6M. According to this study, the most successful strategy selects stocks based on their 12-month return (= Price Index 1Y) and holds the portfolio for three months.
* The share price is adjusted for stock splits, cash dividends, right offerings and spin-offs.