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Unusual options activity by volume and open interest
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OptionCharts provides option-market charts for volume, open interest, max pain, probabilities, Greeks, exposures, and historical data.
OptionCharts lists more than 20 charts per ticker, including Profit & Loss, Open Interest, Option Volume, Max Pain, Probability Distribution, Expected Move, IV Skew, Greeks, GEX, DEX, and Contract History.
The site states that full charts, real-time options data, full-screen views, downloads, and ad-free browsing require an upgrade. Probabilities and Greeks are model- or price-derived references and do not guarantee trading results.
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