ULTOSC

Summary

Ultimate Oscillator: momentum indicator combining buying-pressure/true-range ratios over three time periods into one 0-100 weighted average. Blends short-, medium-, and long-term momentum to damp single-period noise. Ranges 0-100; conventionally >70 overbought, <30 oversold.

Formula

trueLow = min(low, prevClose); BP = close - trueLow TR = max(high-low, |prevClose-high|, |prevClose-low|) avg_n = (sum BP over n bars) / (sum TR over n bars) ULTOSC = 100 * (4*avg_short + 2*avg_mid + avg_long) / 7

Notes

The three periods are sorted internally, so the 4/2/1 weighting always applies to the shortest, middle, and longest period regardless of the order in which you pass them.

Inputs

inPriceHLC — High/Low/Close price series

Outputs

outReal — Ultimate Oscillator value

Parameters

optInTimePeriod1 — Bars for one averaging window
optInTimePeriod2 — Bars for another averaging window
optInTimePeriod3 — Bars for another averaging window

Implementation

TA-Lib Definition: ultosc.c · ultosc.yaml

Native	File
C	`ta_ULTOSC.c`
Rust	`ultosc.rs`
Java	`Core.java`

TA-Lib is also available for Python, R and more using a wrapper.

Aliases

Ultimate Oscillator, UO

References

Larry Williams, The Ultimate Oscillator, Technical Analysis of Stocks & Commodities, V.3:4 (1985)