Does an extreme RSI reading mean the stock is about to reverse?

No. RSI measures the speed and size of recent price moves, not direction going forward. A strong trend can hold an overbought or oversold reading for a long stretch without reversing.

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Should I reduce my position size when RSI is at an extreme reading?

Q: Should I reduce my position size when RSI is at an extreme reading?

Enter your normal dollar risk per trade, the current 14-period RSI, and the RSI levels where you want to start and finish scaling down. The tool scales your suggested risk in a straight line based on distance from the neutral midline of 50, down to a minimum floor you set.

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Enter Your Normal Risk and Current RSI

Set the RSI level where you start scaling down and the level where you cut to your minimum size.

Your Result

Fill in the fields on the left and click Calculate to see your suggested size multiplier.

How this is calculated

RSI (Relative Strength Index) measures the speed and magnitude of recent price changes on a 0 to 100 scale. 14-period is the standard, most common lookback.
Traditional reference points mark 70 and above as overbought and 30 and below as oversold, though these are conventions, not fixed rules, and different traders and markets use different thresholds.
This tool scales your suggested risk in a straight line based on how far the current RSI sits from the neutral midline of 50, in either direction, down to a minimum floor you set.
An extreme RSI reading reflects a stretched, high-momentum move. It does not predict whether that move continues or reverses. Strong trends can hold overbought or oversold readings for extended periods without reversing.
This is a size-scaling heuristic for managing momentum and volatility risk, not a trade entry or exit signal. Enter your own current RSI reading from your charting platform; this tool does not fetch live market data.

Risk & liability disclaimer: This calculator produces a mathematical estimate based on the numbers you enter. It is not financial advice and does not guarantee any trading outcome. Trading involves risk of loss, and past position sizing decisions do not predict future results. Trading Habits is not a broker-dealer, registered investment adviser, or tax professional, and is not affiliated with any broker, exchange, or data provider. We do not guarantee this tool is error-free or suitable for your situation. Always verify results independently and consult a licensed professional before making any trading or financial decision. You could lose some or all of the capital you trade with.

Should I reduce my position size when RSI is at an extreme reading?

Enter Your Normal Risk and Current RSI

Your Result

How this is calculated

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