On this page
Where to find it
- Where
- Chart toolbar → Indicators → group "Library · Momentum"
- Target
- Pane; Awesome and Accelerator draw histograms
- Session reset
- None; no study reads the session anchor or tick size
- Smoothing families
- Simple SMA, SMA-seeded EMA, Wilder, fixed-factor exponential
What it does
The family mixes four smoothing conventions and never combines two inside one study. Simple SMA: Awesome (SMA fast − SMA slow of hl2), Accelerator (AO − SMA of AO), DPO (close shifted by floor(N/2)+1 minus SMA), KST (four percent ROCs each smoothed by an SMA and weighted 1/2/3/4, plus a signal SMA) and Balance of Power (mean of (close−open)/(high−low) over bars with a range). SMA-seeded EMA: TRIX (percent change of a triple EMA), Schaff Trend Cycle (MACD stage) and Elder Ray (high − EMA and low − EMA).
Wilder smoothing is used by the two RSI components of Connors RSI (3-period price RSI, 2-period streak RSI, plus a 100-bar percent rank of one-bar returns with a strict less-than comparison). Fixed-factor exponential smoothing drives Schaff (factor 0.5 by default) and Fisher (0.67 on the normalised value, 0.5 on the transform, not adjustable). Ultimate Oscillator is a 4/2/1 weighted mean of buying pressure over true range on three horizons. RVI uses the symmetric 1-2-2-1 filter of Ehlers on close−open and high−low. Chande Momentum is a raw rolling sum, not a Wilder average. Coppock Curve is a linear WMA of two percent ROCs.
Settings
| Study | Setting | Default (range) | What it changes |
|---|---|---|---|
| Awesome Oscillator | Fast SMA / Slow SMA | 5 (1–200) / 34 (2–500) | Two SMAs of the median price |
| Accelerator Oscillator | Fast SMA / Slow SMA / AO smoothing | 5 / 34 / 5 (1–200) | AO inputs, then the SMA subtracted from AO |
| Ultimate Oscillator | Short / Medium / Long period | 7 (1–200) / 14 (1–400) / 28 (1–800) | Three horizons weighted 4/2/1 |
| Detrended Price Oscillator | Period | 20 (2–500) | SMA length; shift = floor(N/2)+1 |
| TRIX | Period | 15 (1–200) | Length of each of the three EMA stages |
| Know Sure Thing | ROC 1–4 / SMA 1–4 / Signal SMA | 10, 15, 20, 30 / 10, 10, 10, 15 / 9 | Pring's four cycles, their smoothing and the signal |
| Relative Vigor Index | Period | 10 (1–200) | Aggregation window over the 1-2-2-1 smoothed terms |
| Chande Momentum Oscillator | Period | 14 (1–500) | Rolling up/down sum window |
| Balance of Power | Period | 14 (1–500) | Averaging window; bars without range are skipped |
| Schaff Trend Cycle | Fast EMA / Slow EMA / Cycle / Smoothing factor | 23 (1–200) / 50 (2–500) / 10 (2–200) / 0.5 (0.05–1) | MACD inputs, stochastic window, fixed-factor smoothing |
| Connors RSI | RSI period / Streak RSI period / Rank period | 3 (1–200) / 2 (1–200) / 100 (1–2000) | The three averaged components |
| Fisher Transform | Period | 9 (2–200) | Median-price normalisation window |
| Coppock Curve | WMA period / Long ROC / Short ROC | 10 (1–200) / 14 (1–500) / 11 (1–500) | Linear WMA over the sum of two percent ROCs |
| Elder Ray | EMA period | 13 (1–500) | Consensus EMA; Bull Power and Bear Power colors |
How to use it
Switch a study on from the Library groups of the Indicators panel and open its settings to adjust the periods above. Awesome and Accelerator are histograms colored by sign, not by bar-to-bar change as Bill Williams draws them; this is a documented difference of the histogram shape. KST, RVI and Elder Ray emit two lines with separate colors.
DPO is the non-centered variant: the value is plotted at the current bar but describes the bar shift positions earlier, so it should not be read as a real-time signal of the last bar.
Limits and pitfalls
- Gaps propagate: an SMA or WMA over a series containing a missing value returns nothing for that window instead of averaging a shorter one.
- Schaff and Fisher freeze their state on a flat window (max equals min) and output nothing for that bar; the last value is never carried forward.
- Fisher clamps the normalised value at ±0.999, capping the output near 7.60; without it a long directional run would produce infinity.
- Connors RSI's percent rank counts strictly lower previous returns divided by N, which differs from the percentile-rank study in the Statistics group.
- Balance of Power's effective averaging length can be shorter than N when bars without range are skipped.
Related pages
- Momentum (RSI, MACD, Stochastic, ADX)
- Moving averages and bands
- Awesome Oscillator study
- Fisher Transform study
- Schaff Trend Cycle study
- Connors RSI study
- Indicator catalog
In the same section
- Risk and stops
- Order flow per level
- Session structure
- Statistics indicators
- Tape studies
- Microstructure series
- Volatility indicators
- Profile levels
This page in other languages
Frequently asked questions
- Why does the Awesome Oscillator use the median price rather than the close?
- Bill Williams' definition uses (high + low)/2 to measure the displacement of the auction's centre on two horizons. The catalog keeps the 5/34 defaults for parity with ATAS and TradingView.
- Are the Fisher smoothing coefficients adjustable?
- No. The 0.67 and 0.5 factors are Ehlers' constants and are not exposed as parameters, so the output stays comparable with the TradingView implementation. Only the period is a setting.