Indicators
  Absolute Price
  Accum / Dist
  ADX
  Average True Range
  Bollinger Bands
  Chaikin Money Flow
  Chaikin Oscillator
  Detrended Price
  Exp Moving Ave.
  MACD
  Mass Index
  Momentum
  Money Flow
  Simple Moving Average
  Negative Volume
  On Balance Vol
  Percentage Price
  Percentage Volume
  Positive Volume
  Price Volume Trend
  Range Envelope
  Rate of Change
  RSI
  Stochastic
  Stochastic RSI
  Volume ROC
  Volume ROC %
  Williams % R
General
Basic Tools
Price Tools
Time Tools
Squares
Angles/Zero Lines
Stop Loss Tools
Negative Volume Index
The Negative Volume Index ( NVI ) is a cumulative indicator which only moves when volume is decreasing. The Underlying premise behind this indicator is that 'informed' investors take their positions on days of low volume, whereas the general public take their positions when volume is increasing.

Yesterdays NVI + [((Today's Close - Yesterdays Close)/Yesterdays Close) x Yesterdays NVI]
Otherwise Today's NVI equals Yesterdays NVI.



click for a larger image
The assumption behind this indicators is that it shows what the 'smart' investors are doing, since it only reacts on decreasing volume days. It is best used as a divergence indicator, and as such is best used as a support to more direct indicators and analysis.


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