anasta...CMF is Chaikin Money Flow...green is money flowing in and red is flowing out of the stock and the length of the bars indicate the magnitude of the flow.....Simple
Chaikin Money Flow (CMF) An oscillator that helps signal if a stock is undergoing accumulation or distribution. It is calculated from the daily readings of the Accumulation Distribution Line. The CMF is unlike a momentum oscillator in that it is not influenced by the daily price change. Instead, the indicator focuses on the location of the close relative to the range for the period (daily or weekly). See ChartSchool article on Chaikin Money Flow