# STOCH ## STOCH The [stochastic oscillator](https://optionalpha.com/analysis/technical-indicators#stochastic-oscillator) is a technical indicator of momentum that shows where the closing price for a period fits in the relative high-low range of a lookback period, typically 14 periods. The stochastic oscillator expresses the closing price for a period as a percentage of the recent high and low for a security. The most recent closing price is the most important data point in the calculation. The stochastic oscillator is plotted as two lines. The first line is the current stochastic oscillator percentage value, and the second line is a three-day simple moving average of the percentage value. These are known as %K and %D, respectively. Source code for the Stochastic Oscillator function is available [here.](https://app.optionalpha.com/ta/STOCH.txt) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.optionalpha.com/technical-documentation/indicators/stoch.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.