# RSI

> The Relative Strength Index in its own pane on a fixed 0 to 100 scale, with overbought and oversold levels, optional smoothing and divergence lines.

RSI measures **how hard recent closes have pushed up versus down**, on a fixed 0 to 100 scale. Above 70 is the classic overbought zone, below 30 oversold. On SPY, a 5-minute RSI pinned near 80 into a level tells you the move is stretched. It doesn't tell you it's over: in a strong trend RSI can stay high for a long time.

Atlas draws it in its own pane under the chart, with the levels shaded, and can add a smoothing line, Bollinger Bands on the RSI itself, and regular bullish and bearish divergence lines.

![RSI 14 pane under NQ 5m with the 70 and 30 band shaded, RSI riding the lower half and dipping toward 30 on the 13:15 low](https://www.skylit.ai/docs/images/atlas/indicators/rsi.light.webp)

*NQ 5m, Oct 16, 2026 · Atlas*

## Adding the indicator

Open the chart settings panel and use the **Add** button in the Indicators section. RSI is the first entry in the **Subpane** group. You can run more than one (an RSI 14 beside an RSI 2), each in its own pane.

## Settings

| Setting | Options | What it controls |
| --- | --- | --- |
| Length | **14** (default) | The RSI lookback. |
| Source | **Close** (default), Open, High, Low, HL2, HLC3, OHLC4 | The price each bar feeds in. |
| Divergence | **Off** (default), On | Draws regular bullish and bearish divergences between RSI and price. |
| Smoothing: Type | **None** (default), SMA, SMA + Bollinger Bands, EMA, SMMA (RMA), WMA | Adds an RSI-based moving average. SMA + Bollinger Bands also draws bands around it. |
| Smoothing: Length | **14** (default) | The length of that moving average. |
| BB StdDev | **2** (default), 0.001 to 50 | Band width, used by SMA + Bollinger Bands. |
| RSI line, RSI-based MA, Bollinger Bands, Bands fill | Colour, width, opacity | Styling for each piece. The RSI line is purple by default. |
| Bullish / Bearish | Colour, width, plus a Label toggle (**on**) | The divergence lines and their labels. Green and red by default. |
| Upper / Lower | **70** / **30** (default), each can be hidden | The overbought and oversold levels, 0 to 100. |
| Middle | **Off** (default), level **50** | An optional middle line. |
| Levels | **Dashed** (default), Solid, Dotted, plus a colour | How the level lines look. |
| Fill | **On** (default), Off | Shades the band between the upper and lower levels. |

## Reading notes

- **The forming bar's value can change** until that bar closes.
- **Divergence lines show up five bars late, on purpose.** A swing point only counts once it has five bars on each side, and the previous swing has to be 5 to 60 bars back. That delay is the honest cost of confirming a pivot rather than guessing one.
- **Read it with the trend.** An overbought RSI in a strong uptrend is often just the uptrend doing its thing, not a reversal signal on its own.
- **Want the candles marked instead?** The [RSI × Bollinger Combo](https://www.skylit.ai/docs/atlas/indicators/rsi-bollinger-combo) colours the candles where RSI and the price Bollinger Bands agree.