This screener lists stocks that currently match VWMA(7) Crossed Below VWMA(13), one of the Volume Weighted Moving Average Crossovers screens. The key difference between a VWMA and a SMA is that a VWMA takes into account the trading volume for each period being considered. The list is updated daily: open a chart for any ticker, or customize the screen, set an alert and backtest it as a trading strategy.