# Relative Strength Index (RSI) Relative strength index (Wilder): momentum on a 0-100 scale, used to spot overbought / oversold conditions and divergences. ## How to read it - Above 70 is overbought, below 30 oversold; in strong trends RSI can stay there. - Divergence between price swings and RSI swings warns of fading momentum. - The 50 line separates bullish and bearish momentum. ## Key settings - Period 14, source close; levels 70 / 30 with a shaded zone. - Smoothing: None (default), SMA, SMA + Bollinger Bands, EMA, RMA or WMA, length 14. - Colour extremes on: the line is coloured beyond the levels. ## Good to know - Drawn in its own pane below the chart.