OptionData LogoOptionData
50% OFF FIRST YEAR

Get 50% off your first year on all API plans!

Contact sales for coupon code
Three APIs. One API key.

US Options Data API
For Real-Time Flow, Historical SQL, and Option Chains

OPRA-licensed U.S. options data API: real-time WebSocket (~10M trades/day), historical ClickHouse SQL (2.8B+ prints), and full option-chain REST — Greeks, IV, and one API key.

14-day free trial
No credit card required
30-day money-back
Live
10M+
trades streaming today
99.9%
Uptime (30d)
10M+
Trades / day
2.8B+
Trades stored
~50ms
API response (US)
OPRA
Licensed feed

Works with your favorite languages

One feed, three ways to access it

Stream it live, query its history with SQL, or pull a full option chain on demand — all from the same licensed dataset.

Realtime · WebSocket

Realtime Options Feed

Stream every U.S. option trade over WebSocket — 30+ fields per print including the Greeks, sentiment, and aggregation modes.

  • WebSocket at wss://ws.optiondata.io
  • 30+ fields with Greeks & sentiment
  • AGGREGATED or RAW modes
Explore the Realtime API
Historical · SQL

Historical SQL Access

Run custom SQL straight against our ClickHouse warehouse over REST. Backtest and analyze the full trade history without downloading a single file.

  • ClickHouse SQL over REST
  • Data from Feb 2025+
  • Built for backtests & analytics
Explore the Historical API
Option Chain · REST

Option Chain API

Get the full option chain in a single POST — every strike and expiration with bid/ask, last price, open interest, IV, and the Greeks, for the latest session or any past trading day.

  • Whole chain in one POST
  • Strikes, expirations, OI, IV & Greeks
  • Latest session or any historical day
Explore the Option Chain API
Use case

Build an unusual options activity API workflow

Combine real-time option trades, option-chain Greeks, and historical SQL to build scanners for large premium, short-dated activity, repeat prints, and custom alert rules.

Explore unusual activity API
Live trade stream
Chain context
Historical backtests

Complete Greeks

Delta, Gamma, Theta, Vega, Rho & IV on every trade.

Advanced Filtering

Filter by symbol, premium, sentiment, expiry and more.

Clean JSON

Predictable JSON across every API, easy to parse.

Aggregation Modes

AGGREGATED for consolidated trades or RAW originals.

Glossary

What is an options data API?

An options data API is a programmatic interface that delivers U.S. equity option market data — live trades, historical prints, and full option chains — so developers can power scanners, backtests, alerts, and trading products without files or scrapers.

OptionData is an OPRA-licensed options data API with three access modes on one key: real-time WebSocket flow (~10M trades/day, 30+ fields with Greeks), historical ClickHouse SQL (2.8B+ trades stored from Feb 2025+), and REST option chains with strikes, expirations, bid/ask, open interest, IV, and Greeks.

Use cases

Options data API for every workflow

Same licensed dataset, different jobs-to-be-done. Pick the persona that matches your stack — each path links to docs with unique examples, not generic filler.

Unusual options activity scanners

Stream live prints, score large premium or short-dated clusters, and backtest alert rules with SQL.

Build UOA workflows

Quant research & backtesting

Query 2.8B+ stored trades with ClickHouse SQL — Greeks, IV, premium, and contract metadata in one warehouse.

Options data for quants

Fintech products & dashboards

Ship customer-facing flow monitors and chain views with one signed API key across WebSocket and REST.

Options data for fintech

Desk alerts & options flow

Filter by symbol, premium, sentiment, and expiry server-side so only actionable trades hit your stack.

Stream options flow
Comparisons

OptionData vs other options data APIs

Decision-stage buyers compare vendors before they subscribe. Each guide includes a clear “who this is for” line — the sentence AI engines and human evaluators both pull first.

OptionData vs Alpaca

Who this is for: teams that need trade-level options prints with Greeks, not equity-first brokerage APIs.

Read comparison

OptionData vs Intrinio

Who this is for: builders comparing institutional market-data vendors for real-time option trades.

Read comparison

OptionData vs Massive.com

Who this is for: developers evaluating high-throughput options tape alternatives for scanners and research.

Read comparison

Developer-first API design

Clean, intuitive APIs with SDKs for popular languages. Get up and running in minutes.

  • WebSocket & REST APIs
    Real-time streaming or request-response
  • Multi-language SDKs
    Python, JavaScript, Go, and more
  • Direct SQL Access
    ClickHouse for complex analytical queries
realtime.ts
import WebSocket from 'ws';

const ws = new WebSocket(
  'wss://ws.optiondata.io?token=YOUR_API_KEY'
);

ws.on('message', (data) => {
  const trade = JSON.parse(data);
  console.log(
    trade.symbol,
    trade.delta,
    trade.sentiment
  );
});
query.sql
SELECT
  symbol,
  SUM(size * price * 100) AS total_premium,
  COUNT(*) AS trade_count
FROM RawOptionTrades
WHERE
  date = '2025-01-15'
  AND symbol = 'AAPL'
GROUP BY symbol
ORDER BY total_premium DESC
LIMIT 10;

Query historical data with SQL

Run custom SQL queries directly against our ClickHouse database. Perfect for backtesting and analytics.

  • Standard SQL Syntax
    Familiar SELECT, WHERE, GROUP BY
  • ClickHouse Performance
    Blazing fast on millions of records
  • REST API Access
    POST SQL queries with your API key

Simple, transparent pricing

One plan, all three APIs.

50% OFF FIRST YEAR

Pro Plan

Everything included — real-time, historical SQL, and option chain.

$599299/month
First year, then $599/month* Contact sales for coupon codeCoupon required for $299/month first-year pricing.
  • Real-time WebSocket streaming (wss://)
  • 30+ fields with Greeks & sentiment
  • AGGREGATED or RAW modes
  • Historical SQL via ClickHouse, data from Feb 2025+
  • Option Chain REST API included
  • 15-min delayed (OPRA)
  • 14-day free trial (SQL capped at 10 rows during trial)
  • 30-day money-back guarantee

Need enterprise features or custom data feeds? Contact our sales team

FAQ

Options data API FAQ

Options data API FAQ

An options data API delivers U.S. equity option market data programmatically — live trades, historical prints, and option chains — so applications can build scanners, backtests, and trading UIs without scraping or file downloads. OptionData exposes three complementary surfaces: WebSocket real-time flow, ClickHouse SQL history, and REST option chains, all behind one API key.

More detail on product & guide pages: Options flow · Quants · Fintech · Unusual activity · Glossary · Blog

Ready to get started?

Join traders and developers using OptionData to power their trading applications.

No credit card required • 14-day free trial • Cancel anytime