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Options Flow

Chain, flow & unusual activity

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US equity options data sourced from OPRA — the consolidated feed covering all 17 US options exchanges (CBOE, Nasdaq PHLX, NYSE Arca, BOX, MIAX, and more). Detect unusual volume spikes, scan the full chain, surface block trades, track OI trends, and look up contract specs.

Unusual Activity

Detect options contracts with abnormally high volume relative to open interest. High volume-to-OI ratios indicate unusual directional bets or potential insider activity.

Returns: Contracts ranked by volume-to-OI ratio with strike, expiry, type, volume, open interest, ratio, last price, and total premium value.
Options Chain

Full options chain for a stock, showing calls and puts side by side at each strike for every expiry. Filter to a specific expiry date to narrow the view.

Returns: Flattened chain rows grouped by expiry and strike, with call and put volume, open interest, and last price per side.
Large Trades

Individual large options trades (block trades and sweeps) above a minimum contract size. Identifies who is making big directional bets, with price, premium, and buy/sell side.

Returns: Individual large trades sorted by size, with timestamp, contract details, price, total premium, and buy/sell side.
Open Interest History

Track how total open interest in a stock's options has changed over time. Shows whether money is flowing in or out of the options market for that ticker.

Returns: Line chart of total OI by date (aggregate=total) or table of OI by date and expiry (aggregate=by_expiry).
Contract Specs

Look up detailed contract specifications for options — strike, expiry, exchange, currency, tick size, and multiplier. Filter by expiry or strike to narrow results.

Returns: Contract specification rows with raw_symbol, strike, expiry, type, exchange, currency, min_price_increment, and contract_multiplier.
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v0.022026-04-19
  • Clarified data source: OPRA consolidated feed covering all 17 US options exchanges
v0.012026-04-19
  • Initial release

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