Making Quant Analysis and Trading accessible to everyone I knew about QuantConnect when I was desperately searching online for Options Historical data in the US markets. Everything else I found was expensive and required me a lot of manual handling. Not to say they weren't realistic at all (i.e. didn't consider company splits, adquisitions, etc.). QuantConnect and the open source lean framework made it very easy to implement trading algorithms (with a results very close to what I get in Interactive Brokers; including fees, splits, dividends, option assignments, etc.) at a very cheap cost (you just pay for the cloud computing resources). Being open source makes it very easy to figure out how to do things, however, they have interactive tutorials that will prepare anyone with basic development skills to implement real-live trading algorithms. Not to say the community is awesome and very helpful. QuantConnect is easily escalable for both small individuals and large corportations. Many organizations and hedge funds use it for their analysis and live trading.

Recommended I have been programming on my bot for over 2 years. In the beginning it was difficult to get to know the platform because there is a lot of possibilities coming at you. But once you understand how this platform works and were to find the information. It's a pleasure to work on your bot. Pros: - Strong community that mostly answers your questions in 24h or max 48 hours. - Working locally or on the platform - Possibility of coding 100% your own strategy - Live Trading with a lot of markets (Equity, Crypto, Forex, Futures). - They listen to proposals to improve the platform and take immediate action. - If using the bronze membership your getting professional help within an hour. (It's normal they charge an amount for the professional help, nothing is free these days.) - Implementing email, sms, telegram messages, ... of the orders the bot is making. Cons: - If u have zero experience programming in Python or C# it's hard to program your own bot despite their learning center. - Maybe an app on the cellphone would be nice. So you can check your bot/code anytime you want (not would be something extra). A tip: Keep persevere once your bot is trading live it's a reward for all the hard work.

Long time believer, first time promoter. I've been using Quantconnect for about two years but they've just released new capabilities for options research, based on user feedback, that prompted me to add a review. They listen to, care about, and build new features for their users (free features). Highly recommend.

Complex, difficult API, slow backtesting Extremely slow backtesting and very complex APi with bad documentation - be ready to spend many hours trying to understand the overly complex API that is changing all the time. And did I mention that support costs? So if a anything is complex you won't get answers from the staff unless you PAY them. I give them 2 stars as they have reasonably reliable data. The platform itself is only worth one star. note: if you ask about slowness or any other thing negative on their forum they delete the posts.

This is a pretty unique business This is a pretty unique business. I've learned a lot as an investor just creating and running simulations here. I really wish these folks the best and hope they can continue to grow and thrive.