# MFI ## MFI The Money Flow Index (MFI) is a technical indicator that generates overbought or oversold signals using both price and volume data. An MFI reading above 80 is considered overbought and an MFI reading below 20 is considered oversold. MFI levels of 90 and 10 are also used as thresholds. The source code for the MFI function is available [here](https://app.optionalpha.com/ta/MFI.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/mfi.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.