Free Unlimited Paper Trading

Execute your algos
commission-free

Alpaca’s developer-friendly API allows you to buy, sell, and short U.S. stocks with zero commissions and a 3.75% margin interest rate providing affordable leverage through Alpaca Securities LLC, a technology-driven FINRA-registered broker-dealer designed for high volume trading. Alpaca supports individual and business accounts.

Sign up free

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

Commission-Free Stock Brokerage for
Algorithmic Traders & Quant Funds

Commission-Free API

Simple RESTful Web API is supported with love by the developer community

Business Account Support

For you who operate or are starting up a proprietary trading firm or hedge fund

Registered Securities Broker

Alpaca Securities LLC is a member of FINRA and SIPC

Margin and Short Selling

Alpaca supports a wide array of algo and quant trading strategies

3.75% Margin Borrowing Rate

Up to 4X intraday and 2X overnight buying power amongst the industry's lowest rates

Two-Factor Authentication

We care about your security and continue to add variety of 2FA options

Free Unlimited Paper Trading

Free Unlimited Paper Trading with Real-Time Market Data

Get started now with paper trading to see how the API works and how your strategy performs. By simply updating the API endpoint from a paper account to a live trading account, you can start running your strategy in the live production environment.

Sign up free

Powerful Tools. You Control Them.

4X Intraday & 2X Overnight Buying Power

Alpaca offers a 3.75% margin interest rate, providing you affordable leverage.

Short Selling

Trade without directional bias. Alpaca's commission-free trading API gives you the ability to run long/short or market neutral strategies.

Pre Market & After Hours Trading

Expand your opportunity set. You can trade outside of Regular Trading Hours. We offer 9:00am to 6:00pm Eastern Time.

Advanced Order Types

Build sophisticated strategies using a suite of order types including trailing stop, OCO, IOC, MOO, and MOC (feature coming soon).

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

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.

What our Users are Saying

quote

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.

quote

John S.
from Stamford, CT

quote

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

quote

Kiran H.
Software Engineer, San Francisco

quote

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

quote

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.

Designed for Algorithmic Trading

Commission
Free Trading

Simple RESTful
Web API

Margin Trading &
Short Selling

Unlimited Paper Trading