Hack Financial Systems

Alpaca API lets you build and trade with real-time market data for free.

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Technology and services are offered by AlpacaDB, Inc. Securities are offered through Alpaca Securities LLC

Commission Free
Stock Trading API

With Alpaca Securities LLC’s commission-free API, you can run algorithmic trading & portfolio management bots and build your own mobile app with ease.

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Commission Free Stock Trading
Alpaca is a Registered Securities Broker

Registered Securities Broker

Alpaca Securities LLC is a member of FInancial Industry Regulatory Authority, Inc. (FINRA). You can check the background of Alpaca Securities on FINRA’s BrokerCheck. Alpaca Securities is also a member of SIPC - securities in your account are protected up to $500,000. For details, please visit www.sipc.org.

Built For Makers
In Open source & Community

We truly believe open source changes the financial systems and how we interact with them. Alpaca grows with our community and knowledges we build together.

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Technology and services are offered by AlpacaDB, Inc.

What our Users are Saying

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Finally, a professional and easy to use API to connect to the markets courtesy of Alpaca. Their team is the real deal. I can't wait to see what's next.

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John S.
from Stamford, CT

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I love Alpaca and their API first approach to trading, I now can add smarter rules for buying and selling stocks for free.

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Kiran H.
Software Engineer, San Francisco

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The Alpaca API is elegant, fast, and easy to understand and work with.

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Jesse C.
Software Engineer, Seattle

These testimonials may not be representative of the experience of other customers and are not a guarantee of future performance or success. Technology and services are offered by AlpacaDB, Inc.

Free features. Forever.

Real-time
Market Data

REST API + WebSocket stream

Agile Management Dashboard

Unlimited Live Paper Trading