Advance Decline Indicators

Advance Decline Indicators


The advance-decline indicators can be divided into two groups. The issue-based indicators count the number of advancing issues, declining issues and unchanged issues on a given exchange. Volume-based indicators total the volume of advancing issues, the volume of declining issues and the volume of unchanged issues. Issues are mostly common stocks, but can also include closed-end funds, ADRs, and preferred stocks.


Symbol Group: Advances, Declines and Unchanged Issues. 
Advancing Volume, Declining Volume and Unchanged Volume. Publisher: Interactive Data Corp (IDC) Update Frequency: Intraday or End-of-day (EOD) Links to Current Symbols: Advances, Declines and Unchanged Issues and Advances, Declines and Unchanged Volume


This group of advance-decline indicators covers five major exchanges. The AMEX, Nasdaq, and NYSE are covered on the US side. The Canadian Venture Exchange (CDNX) and Toronto Stock Exchange (TSE) are covered on the Canadian side. The Canadian indicators are updated after the market close (end-of-day EOD).


The advance-decline data for the five exchanges is sourced from Interactive Data Corp (IDC), which provides the main data feed at StockCharts. This data is received in tick form and StockCharts then converts it into intraday and daily data, which can then be used for charting.

Note that StockCharts also calculates and publishes a series of breadth indicators specific to the major index ETFs and sector SPDRs. These include Advance-Decline Percent, Advance-Decline Volume Percent and High-Low Percent. These “in house” breadth indicators are updated after the market close (end-of-day EOD).

Net Advances

Net Advances and Net Advancing Volume are also featured in this indicator group, such as AMEX Advance-Decline Issues ($AMAD) and NYSE Advance-Decline Volume ($NYUD). Net Advances equals advances less declines. Net Advancing Volume equals the volume of advancing issues less the volume of declining issues. These “net” versions can be used to create other indicators, such as the AD Line and AD Volume Line.

Chart Example

The first chart shows the Nasdaq AD Line ($NAAD) using intraday data (30-minute). Chartists can create the AD Line by selecting “cumulative” as “Type” under “Chart Attributes”. This short-term picture can be used by day and swing traders. Click here for a live version of this chart.

Advance-Decline Indicators

The second chart shows the NYSE AD Line ($NYAD) using daily data, and the indicator windows shows NY Advances ($NYADV) and NY Declines ($NYDEC) for reference.Click here for a live version of this chart.

Advance-Decline Indicators

Symbol Sample

StockCharts users can find these symbols using two different searches: one for advance-decline issues and one for advance-decline volume. These lists will also show the starting date for each data series. The example below shows a sample list of symbols.

Advance-Decline Indicators

Notice that users can search for breadth indicators by quantifying their search criteria using the advanced search functions. Searching for “issues -percent” is enough to highlight the advance-decline issues indicators. The terms preceded by a minus sign (-) are excluded to narrow the search and remove unwanted names.

Advance-Decline Indicators


TASC Article: StockCharts subscribers can access related articles from Stocks & Commodities Magazine (TASC).

ChartSchool: There is also an article on the AD Percent in our ChartSchool.