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Advance-Decline Ratio

The Advance-Decline Ratio is also market breadth indicator. It is calculated by dividing the number of advancing issues by the number of declining issues using daily or weekly NYSE data. It works very well as an overbought/oversold indicator and as a momentum indicator. A moving average should be used to smooth out the swings.

This chart shows you the weekly NYSE Advance-Decline Ratio on a 10-week moving average. Readings below 90 indicate intermediate bottoms and readings above 170 tops.

Upside-Downside Volume Ratio

The Upside-Downside Volume Ratio is also market breadth indicator. It is calculated by dividing the volume of advancing issues by the volume of declining issues, using daily or weekly NYSE data. It works very well as an overbought/oversold indicator and as well as a momentum indicator. A moving average should be used to smooth out the swings.

Upside-Downside Volume Line

The Upside-Downside Volume Line is a market breadth indicator and should be compared to the other market indices like the Dow Jones or S&P 500. Daily or weekly NYSE data is used in the calculation. Because the Upside-Downside Volume Line reflects the action of the general market, any divergences are watched closely by market technicians. As long as the Dow and the Upside-Downside Volume Line are moving in the same direction the trend will continue. If the Dow makes a new high which is not confirmed by a high of the Upside-Downside Volume Line, caution is warranted. It is more affirmative than the Advance-Decline Line and it gave a perfect sell signal in January 2000, when the Dow made a new high and the Upside-Downside Volume Line lagged behind (charts below). Vice versa, if the Dow makes a new low and the Upside-Downside Volume Line doesn't, you should cover your short sales. To calculate your own weekly Upside-Downside Volume Line is very simple and you can begin your calculations at any time. Just pick a large enough base number like 1000000. Then you calculate each week (or day) the difference between the upside volume and downside volume by adding the volume of advancing issues and subtracting the volume of declining issues. If you have an upside volume of 673210 and a downside volume of 732827 on your first week, the reading of your newly created weekly Upside-Downside Volume Line would be 940383 (example below).

Here is a beautiful example of the Upside-Downside Volume Line. Volume moves the markets and this indicator gave a perfect sell signal in December 1999, when the Dow made a new high and the Upside-Downside Volume Line didn't. It would have kept you also on the right side of the market right to the top.

Upside-Downside Volume Net Difference

Another method used by market technicians is to calculate the net difference between the upside- and downside volume. Daily or weekly data can be used. The net difference between upside- and downside volume is calculated weekly and the result is added. To smooth out the swings, a 10-week moving average should be applied. Below there is an example for weekly calculations:

Advance-Decline Net Difference

Another method used by market technicians is to calculate the net difference between advances and declines. Daily or weekly data can be used. The net difference between advances and declines is calculated weekly and the result is added. To smooth out the swings, a 10-week moving average is applied. Below there is an example for weekly calculations:

The chart went from extremely overbought in July 1997 to heavily oversold in September 1998:

This indicator is calculated by dividing the weekly number of advances and declines by the number of total issues traded. A 10-week moving average is applied to smooth out the swings.

Global Futures Upside-Downside Volume Index

This indicator is calculated by dividing the weekly upside and downside volumes by the weekly total volume. A 10-week moving average is applied to smooth out the swings.