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Marketplace overlaysOptions OI Heatmap

Options OI Heatmap

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Overlay option open interest as horizontal bars on the price axis

4.9(178)

3.2k installs 890 2 comments

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optionsoiheatmapsentiment

Free

Open in QuaTick IDE Edit in IDE

Version1.1.0

Updated2025-10-30

Compatiblecandlestick

Rating Distribution

Preview

1 / 2

Chart preview

About

Renders call and put open interest at each strike as heatmap bars directly on the chart's price axis.

Features

• Green Call OI bars (right side)

• Red Put OI bars (left side)

• Auto-scales to maxOI

• Visible range filtering for performance

Overlay Details

Render Layer

price

Source Code

Edit in IDE

typescript

1	// OI Heatmap Overlay — Quatick IDE
2	// Returns a volume-weighted OI proxy series from OHLCV.
3	// SDK math globals available: sma, ema, atr, rsi, macd, bollingerBands, vwap, etc.
4
5	const metadata = { id: 'oi-heatmap', name: 'OI Heatmap', version: '1.0.0', category: 'overlay' };
6
7	interface BarData {
8	time: number;
9	open: number;
10	high: number;
11	low: number;
12	close: number;
13	volume?: number;
14	}
15
16	const defaultParams = { period: 14, smoothing: 5 };
17
18	/**
19	* OI Proxy — approximates open interest pressure using volume and price range.
20	* High positive values indicate accumulation (bullish OI buildup).
21	* High negative values indicate distribution (bearish OI buildup).
22	*/
23	function calculate(bars: BarData[], params = defaultParams): { time: number; value: number }[] {
24	const closes = bars.map(b => b.close);
25	const highs = bars.map(b => b.high);
26	const lows = bars.map(b => b.low);
27	const volumes = bars.map(b => b.volume ?? 1);
28
29	// Estimate OI change: up-close bars with high volume = OI increase (bullish)
30	const oiDelta = bars.map(b => {
31	const direction = b.close >= b.open ? 1 : -1;
32	const range = b.high - b.low \|\| 1;
33	const bodyRatio = Math.abs(b.close - b.open) / range;
34	return direction * bodyRatio * (b.volume ?? 1);
35	});
36
37	// Smooth and normalise
38	const smoothed = sma(oiDelta, params.smoothing);
39	const maxAbs = Math.max(...smoothed.filter(v => !isNaN(v)).map(v => Math.abs(v)), 1);
40
41	return bars
42	.map((bar, i) => ({ time: bar.time, value: isNaN(smoothed[i]) ? NaN : smoothed[i] / maxAbs }))
43	.filter(p => !isNaN(p.value));
44	}

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