StockCharts maintains and publishes breadth indicators for over a dozen indices and sectors. This data includes advancing issues, declining issues, advancing volume, declining volume, new highs, new lows and more. Indicators from these data sets can be used to create AD Lines, AD Volume Lines and more.
Symbol Group: Advance-Decline Percent Publisher: StockCharts Update Frequency: End of Day (EOD).
These indicators are updated after
the market close, usually by 6PM ET. Current Symbols: Catalog link
StockCharts uses a three-step process to calculate breadth indicators. First, StockCharts maintains component lists for these indices. Second, our scan engine uses these component lists to run scans based on the price data for the individual stocks. Third, the data is then updated and published to our website.
This “in-house” data may differ from other sources due to differences in the index components and price data. Index components change and require updates on a regular basis. Additionally, note that StockCharts uses dividend-adjusted data for its calculations, while other sources may use non-adjusted data.
Advance-Decline Percent (AD Percent) is a breadth indicator that measures the percentage of Net Advances for a particular group of stocks, such as an index or ETF. Net Advances equals the number of advances less the number of declines. AD Percent equals Net Advances divided by the total number of stocks in the group, fluctuating between -100% and +100%. Chartists can use this indicator to create oscillators and the AD Line.
Click here for a current list and to see the starting date for these symbols. The example above shows a partial list of symbols. Note that the starting dates are shown in the symbol catalog under the “first data point” column.
Users can find symbols for AD Percent by searching for “advance and decline and percent -volume” in the symbol catalog (without quotations). The “and” ensures that each term is required. A minus sign in front of a word (-volume) ensures that the term is excluded.