Calculates the Average True Range (ATR) as defined by Welles Wilder. A stock's range is the difference between the high and low prices on any given day. It reveals information about how volatile a stock is. Large ranges indicate high volatility and small ranges indicate low volatility (see investopedia for more).
Functions:
ATR(bars [,offset,series])
Returns the Average True Range over the specified period.
ATRN(bars [,offset,series])
Returns ATR as a percentage of the closing price. ATRN provides a better way to compare the volatility between stocks with different prices.
Examples:
To screen for stocks whose ATR increased in the past 10 bars enter:
ATR(14,0) > ATR(14,10)
Series Parameter
By default, technical functions access the time series of the instrument in context. Normally, that is the Stock or ETF currently being evaluated or ranked. In specialized Ranking Nodes, the context depends on the node type. For example, in an "Industry Node" (used to rank Industries against each other), the industry benchmarks are the default context.
You can specify a different time-series in several ways like: using GetSeries(), specifying a StockID directly, or using a time series id. See the examples below.
Examples
Get the latest close price using Close(0, series) using different methods for different time series.
| Using the ID directly | |
| Using the StockID for SPY:USA* | Close(0, 24262) |
| For the Industry series of the stock being evaluated | Close(0,#Industry) |
| Using a Time Series Id | Close(0,$RUI) |
| For the benchmark | Close(0, #Bench) |
| Using GetSeries | |
| Using a fully qualified ticker | Close(0, GetSeries("SPY:USA")) |
| When USA is your default | Close(0, GetSeries("SPY")) |
| See GetSeries() for more examples like for aggregate series | |
| * StockIDs never change | |
Pre-defined Series Ids
These are special series ids. Additional Series Ids can be found in the reference under: MISC→TIME SERIES IDs
| Id | Description | Freq | OHLC |
| Industry and Sector | |||
| #Sector | Stock's Sector | Daily | C |
| #SubSector | Stock's SubSector | Daily | C |
| #Industry | Stock's Industry | Daily | C |
| #SubIndustry | Stock's SubIndustry | Daily | C |
| Miscellaneous | |||
| #Bench | Benchmark closing prices | Daily | C |
| #TNX | 10Y Treasury Note | Daily | OHLC |
| FED Model series (chart) | |||
| #SPRP | SP500 Risk Premium | Weekly | C |
| #SPEPSCY | SP500 EPS CurrentY | Weekly | C |
| #SPEPSNY | SP500 EPS NextY | Weekly | C |
| #SPEPSCNY | SP500 EPS Blend Y | Weekly | C |
| #SPEPSQ | SP500 EPS Blend Q | Weekly | C |
| #SPEPSTTM | SP500 EPS Trailing 12 months | Weekly | C |
| #SPYield | SP500 Yield | Weekly | C |
Special Series Ids for Moving Averages & Highest/Lowest functions
| Id | Description | Context |
| #Open | Open prices | Stock & ETF |
| #High | High prices | Stock & ETF |
| #Low | Low prices | Stock & ETF |
| #Vol | Volumes | Stock & ETF |