Backtesting built
by traders.

Build scanners, dashboards, and backtests with U.S. stock and options data through structured JSON, quote-aware history, and authenticated WebSocket streams. Live or delayed access depends on your plan.

Create API keyFree

WebSocket docs Explore cutebacktests

Stocks + optionsmarket dataUp to 10years historyREST + WebSocketsdelivery4indicators

German precision & billing

CuteMarkets is headquartered and engineered in Germany. The product is built around explicit data contracts, status visibility, and repeatable checks for stock and options market workflows.

For B2B customers, our European entity supports German billing formats and EU tax invoices, including VAT and reverse-charge handling where applicable.

Try it yourself

Build a request. See the response.

Pick a ticker, expiration, and contract type. Then hit Send to see exactly what our API returns.

Underlying Ticker

Contract Type

Expiration Date

Results Limit

Create Account

Request

GEThttps://api.cutemarkets.com/v1/options/chain/AAPL?expiration_date=2026-05-29&contract_type=call&limit=5

Authorization:Bearer YOUR_API_KEY

Response

Configure your request above and hit Send

Available endpoints

GET/v1/options/chain/{ticker}

Full options chain snapshot

GET/v1/options/snapshot/{underlying}/{contract}

Single option contract snapshot

GET/v1/options/contracts/{ticker}

Single contract with Greeks & IV

GET/v1/options/quotes/{ticker}

Historical NBBO quotes (nanosecond)

GET/v1/options/trades/{ticker}

Trade-level tick data

GET/v1/options/aggs/{ticker}/prev

Previous trading day OHLC bar

GET/v1/options/aggs/{ticker}/{span}

OHLCV aggregated bars

GET/v1/options/open-close/{ticker}/{date}

Daily OHLC + pre/post market

GET/v1/options/indicators/sma/{ticker}

Technical indicators (SMA, EMA, RSI…)

Execution realism guides

Practical checks for stock and options backtests

These pages support the core API pages with concrete modeling rules for quotes, trades, spreads, fills, stream freshness, and scanner evidence.

Why backtests fail

Stale contracts, last-price fills, quote gaps, and weak liquidity filters.

Slippage modeling

Bid/ask spread assumptions, midpoint fills, and marketable execution drag.

Mid vs fill price

Why a reference midpoint is not the same as an executable fill.

Bid/ask spread

Use spread as both a liquidity gate and a backtest cost input.

Quote vs trade timeline

Read bid, ask, midpoint, and prints together around each decision.

Popular expiration references

Expiration calendar

Weekly, monthly, quarterly, and holiday-adjusted option expiration workflow.

Next OpEx date

Immediate June 18, 2026 monthly and quarterly OpEx answer.

2026 options expiration dates

Monthly OpEx, quarterly cycles, LEAPS anchors, and holiday moves.

VIX expiration dates

2026 VIX standard dates, last trading days, and SPX cycle mapping.

OCC option symbol decoder

Parse OSI ticker, expiration, call or put type, and strike.

Why VIX expires before SPX OpEx

Understand the 30-day relationship and the 2026 timing exceptions.

OCC option symbol format

Fixed-width OSI root, expiration, call/put, and strike examples.

SPY 2026 expirations

SPY monthly anchors, weekly candidates, and holiday-adjusted dates.

About CuteMarkets

Backtesting built
by traders.

CuteMarkets was founded after years of building and running systematic strategies with the same pain: expensive data, legacy APIs, and too much integration friction. We built the stock and options API we wanted to use ourselves: clean REST, live WebSockets, and production-ready contracts.

Read our story