Stochastic Oversold Bounce
The stochastic oscillator measures where a stock closes within its recent high-low range. Readings in the lower zone indicate the stock is closing near the bottom of its range; a turn back up out of that zone is read as a short-term momentum reversal.
- Bias
- Bullish
- Category
- Momentum Indicators
- Scan cadence
- Every close
What has to be true for a Stochastic Oversold Bounce to trigger
- The oscillator having reached oversold territory
- A turn back up out of that zone
- Supporting price structure around the signal
How PatternGrade grades it
A cleaner turn from a deeper oversold reading, within better trend context, grades higher.
Every scanner grades its hits A+, A or B from the pattern's own measurable structure. The grading is deterministic — the same chart always produces the same grade. It describes how closely the chart matches the pattern, not how likely anything is to happen; no hit rate or probability is attached to a grade. The reasoning is set out in the methodology.
What a Stochastic Oversold Bounce looks like in practice
A stock pulls back within an established uptrend, and the stochastic oscillator falls to 14, deep in oversold territory, as price reaches $61 against a rising 50-day average at $60.40. Over the next two sessions the %K line turns up and crosses above %D while price closes back above $63. The oscillator had been below 20 for four consecutive sessions before turning.
How a Stochastic Oversold Bounce fails
The oscillator stays oversold while price keeps falling. This is the standard failure of every bounded oscillator: in a strong downtrend stochastics pin near zero for weeks, and each apparent turn up is a one-day bounce inside a continuing decline. Oversold is a description of recent range position, not a floor, and treating it as one is the single most common misuse of the indicator.
What this pattern is telling you
Oscillators are built for rangebound conditions. In a strong downtrend, stochastics can sit oversold for a long time, and buying every turn is a losing exercise.
PatternGrade is not a financial advisor and does not give buy or sell recommendations. Targets and stops shown on a pattern are reference levels derived from its geometry, not advice.
How to scan for Stochastic Oversold Bounce setups
PatternGrade rescans every liquid US stock (~4,500 names) for this pattern after every close and returns the hits as a graded list, with the pattern drawn on each chart, so you review setups rather than hunt for them.
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Stochastic Oversold Bounce FAQ
What does stochastic oversold mean?
The stock has been closing near the bottom of its recent trading range. It signals extension, not a reversal. In a downtrend, oversold can persist for weeks.
What does the stochastic oscillator measure?
Where the current close sits within the high-low range of a lookback window, expressed 0-100. A reading of 15 means the stock is closing near the bottom of its recent range. George Lane developed it, and the standard settings are 14 periods with a 3-period smoothing.
What counts as oversold?
Conventionally below 20. That threshold is a convention rather than a rule, and it is worth remembering that a stock can be below 20 for weeks in a genuine downtrend. Oversold means recently weak, not cheap.
Should I buy when stochastics are oversold?
Oscillator extremes work best as timing tools inside an established uptrend, where a pullback is expected to be temporary. In a downtrend they are close to useless as buy signals. PatternGrade weights the surrounding trend heavily, so an oversold reading below falling averages grades poorly.
What is the difference between %K and %D?
%K is the raw calculation and %D is a moving average of it. The crossover of %K above %D is the conventional trigger, since it filters some of the noise in the raw line at the cost of a little lag.
Patterns a Stochastic Oversold Bounce is mistaken for
- RSI Bullish Divergence
- Divergence compares two lows over time. A stochastic bounce is a single reading turning up from an extreme, with no comparison to a prior low.
- 20-Day SMA Bounce
- That pattern is defined by a price level: a moving average holding. This one is defined by an oscillator reading. They often coincide, and the combination is stronger than either alone.
- MACD Bullish Cross
- MACD is unbounded and trend-following. Stochastics are bounded 0-100 and measure range position. Very different response speeds.
- Stochastic Overbought Rejection
- The mirror at the other extreme: the oscillator turning down from overbought after an advance.
Last reviewed . Structure and grading for the Stochastic Oversold Bounce are reviewed against the scanner's own rules.