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Leading the World in Algorithmic Trading

QuantConnect has been leading algorithmic trading since 2012. Today, we have a global community of 175,000 quants, who rely on our LEAN engine--a feature-rich, rapidly-evolving framework--to power their strategies and facilitate integrations to other financial tools, data sources, and brokerages.

Now you can connect to Atreyu for free through QuantConnect. Even better? Atreyu will sponsor Firm Trading Packs for 30 new subscribers on its site. The standard price is $280 per month. Contact Atreyu for details.

Integrate Atreyu using few lines of code

class BasicTemplateAlgorithm(QCAlgorithm):
def Initialize(self):
‘‘‘Initialise the data and resolution required, as well as the cash and start-end dates for your algorithm. All algorithms must initialized.’’’
def OnData(self, data):
‘‘‘OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here. data is a Slice object keyed by symbol containing the stock data’’’

Trading Firm Pack

Everything you Need for Quantitative Trading Research
$280/mo Contact Us
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Unparalleled Access to Prime Brokerage Routing

QuantConnect offers integrations with thousands of alternative data sources and other brokerages. The latest to join us is Atreyu, a tech-driven brokerage that serves professional quants who trade in U.S.-based markets.

With a few clicks, join our powerful algorithmic trading platform with the Atreyu FIX integration. Using the FIX protocol, orders are routed over a local cross-connect network for the best speed and reliability.

Once connected, QuantConnect’s professional customers can easily route to prime brokerages like Axos and ABN with low fees and maximum speed. Use the Atreyu integration for free through QuantConnect.

Connect to Atreyu

Deploy Your Algorithm

Live Trading Professionals

Since 2012, QuantConnect has pioneered live trading of quantitative strategies, hosting more than 150,000 live strategies and trading more than $1B notional volume every month. We have a track record of awesome uptime, with many strategies being online for 18 months straight before requiring maintenance or rebooting. This level of commitment to your strategy’s stability sets QuantConnect apart in the world.

Deploy Strategy Live Today

Trade Live
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Be in the know on the go. Sign up for notifications on algorithm activity and strategy movements.

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Telegram Alerts

Stream notifications of your strategy to private channels or even to groups to facilitate collaboration and multi-channel monitoring.

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Webhook Events

Call APIs and external servers to trigger services based on your trading activity with our web hook alerting.

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Rich Order Support

Route orders to Atreyu with our standardized, brokerage agnostic API. If you ever want to test another execution venue you can deploy your strategy to another location without changing a single line of code. QuantConnect fully models supported order types in backtesting, paper trading, and all the way through to the brokerage execution.

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Spend Your Time on Alpha
Launch Algorithm Live
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The Whole Quant Journey

Research. Backtest. Live trade. QuantConnect offers a full suite of financial tools, as well as thousands of alternative data sources and brokerages.


Use our JupyterLab to research your strategy.


Backtest with our LEAN CLI engine.


Execute with direct-market access through Atreyu.

Trade with some of the lowest fees through top-tier, prime brokerages thanks to this integration.

Test Your Ideas
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Join a Global Community of 175k Quants

From academics to hedge fund managers, our community grows and thrives thanks to our rich API and integrations with dozens of exchanges.






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What they say

Bill M.

Bill M.


Your entire team consistently demonstrate an obvious commitment to helping people both understand how your product works and keeping them happy by tempering frustrations – and this is nothing short of World Class support. Sincerely, I think QuantConnect is one of the most important financial tools in industry.

Manoj A.

Manoj A.


I love QuantConnect for all of the features - can code my algorithms in C#, my favorite language, the bootcamp series got me up and running in no time, the online documentation makes it so easy to develop, the way QC consolidates ticks, trade and quote bars of different periods into a single event, OnData, simplifies things and my favorite: I can run Lean on my desktop and use all of the features of Visual Studio.

Zack W.

Zack W.


I really appreciate the team's work on QuantConnect, it's a stunning masterpiece. I was a option market maker. I'm using Lean as my core backtesting engine, I think it's super powerful to support both research, backtesting and live-trading, and I believe it would be stronger in future.

Gabriel M.

Gabriel M.


You cannot believe how QuantConnect and Lean project changed my life. I have no words to thank you and the team the impact in my life and my future. Your platform gave me access to a world that is hard to access for individuals like me. Thank you.

Tristan L.

Tristan L.


Multiple students have singled out their time on QC as the single most educational experience of their undergraduate career. Some even said "most fun"! All said it was difficult which should be taken as a compliment because "fun"/difficulty is the holy grail of student reviews.

Peter S.

Peter S.


The platform is very easy for team members to collaborate on the code development simultaneously. Very easy to implement new algorithms with Interactive Brokers.

Join the Community

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Take the first step on your algorithmic trading journey.

Trading Firm Pack

All the essentials for your algorithmic trading with Atreyu. Research, backtest and live trade with professional grade infrastructure.

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