BROKER API

Trade stocks and ETFs through one integration

Broker API is fully equipped with everything you need to launch and scale.

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Trusted by 200+ global financial institutions and fintechs

Cross-border by design

Reach US and European markets with one integration. US stocks and ETFs plus European equities via Xetra are live.

Regulated across US, UK, EU

Alpaca Europe is CNMV-registered in Spain. Alpaca Securities is FINRA-regulated and self-clears in the US through DTCC.

Developer-first API, GDPR-native architecture

Build on a simple, modern API with GDPR-native architecture that keeps everything compliant.

Multi-market access with one integration

Offer both US Stocks and ETFs alongside European stocks, with more to come.

US Stocks & ETFs

Fractional Shares

Empower customers to trade real-time on both quantity and notional orders (up to 9 decimal points)

24/5 Trading

Allow global customers to flexibly trade US equities beyond standard hours from Sunday evening through Friday evening

Advanced Order Types

Choose from a suite of advanced order types including: Market, Limit, Stop, Stop Limit, Opening and Closing Auction, Bracket, One-Cancels-Other (OCO), One-Triggers-Other (OTO), and Trailing Stop.

European Equities

Xetra Exchange

Coming soon!

Euronext

Coming soon!

London Stock Exchange

Coming soon!

Everything you need

Our comprehensive platform gets you to market quickly including middle/back office reporting.

Our API-driven architecture lets you access and pay for only the products you need.

Onboarding

Offer customers a seamless, near instant account opening experience. Alpaca acts as the dealer of record.

Trade

Build engaging investing and trading experiences for novice to professional investors.

Real-Time Events

Receive and automate responses to real-time updates on account opening, fund flows, equity trades and replay past events via Server-Sent-Events (SSE).

Orders

Allow customers to place, monitor or cancel whole share or fractional (notional) orders.

Corporate Actions

Educate and engage your users when notifying them of upcoming public corporate action announcements on dividends, mergers, spinoffs and stock splits on how it will impact their account.

1/1

Simple and Modern API

curl --request POST 'https://api.eu.alpaca.markets/v1/trading/orders' \
--header 'Authorization: *****' \
--header 'Content-Type: application/json' \
--data-raw '{
  "type": "market",
  "time_in_force": "day",
  "commission_type": "notional",
}'

//Response
{
    "id": "09b72899-152f-4899-aea5-8d8d0f9071bf",
    "client_order_id": "5680c4bc-9ac1-4a12-a44c-df427ba53032",
    "created_at": "2026-12-12T22:31:24.668464435Z",
    "submitted_at": "2026-12-12T22:31:24.668464435Z",
    "asset_id": "b0b6dd9d-8b9b-48a9-ba46-b9d54906e415",
    "symbol": "AAPL",
    "asset_class": "us_equity",
    "qty": "1",
    "price": "289.50",
    "order_type": "market",
    "time_in_force": "day",
    "status": "accepted",
}

Our simple and modern RESTful Web API allows you to build scalable trading services, while staying compliant with applicable rules and regulations. We also offer Open API support.

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