Relative Strength Index API

Momentum oscillator bounded between 0 and 100 that measures the speed and magnitude of recent price changes to flag overbought and oversold conditions.

About Relative Strength Index API

RSI is computed from the average gains and losses over the chosen period, with classic thresholds of 70 (overbought) and 30 (oversold). Beyond extreme readings, traders watch for divergences against price, mid-line crossings around 50 as a trend filter, and shifts in the index's own range to confirm regime changes.

Endpoint:

https://financialmodelingprep.com/stable/technical-indicators/rsi?symbol=AAPL&periodLength=10&timeframe=1day

Relative Strength Index API Parameters

How it works

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Related Relative Strength Index APIs

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Williams

Momentum oscillator bounded between -100 and 0 that locates the current close relative to the highest high and lowest low of the look-back window. Read more

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Triple Exponential Moving Average

A further lag-reduced moving average defined as 3·EMA − 3·EMA(EMA) + EMA(EMA(EMA)), tighter to price than both EMA and DEMA. Read more

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Exponential Moving Average

Moving average that applies exponentially decaying weights to past prices, making the line more responsive to recent moves than a simple SMA. Read more

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Weighted Moving Average

Moving average that assigns linearly decreasing weights to older prices, balancing the responsiveness of an EMA with a deterministic decay. Read more

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Average Directional Index

Indicator measuring trend strength on a 0–100 scale, derived from smoothed directional movement and used to separate trending markets from ranging ones. Read more

Relative Strength Index API FAQs

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