Composer by SoFi is an automated trading platform where investors build, backtest, and execute AI-assisted trading strategies with no coding required.
About
Composer is an automated trading platform and investment app that lets people create, test, and run rule-based trading strategies without writing code. It addresses a common problem for self-directed investors: sophisticated algorithmic trading has historically required programming skills and expensive tooling, while manual trading invites emotional, inconsistent decisions. Composer packages strategy design, backtesting, and live execution into a single brokerage account.
Users describe goals, strategy ideas, and risk concerns in plain English, and an AI-assisted editor generates a corresponding strategy, which can then be backtested against historical data and edited in a visual no-code editor before going live. Composer executes trades and rebalances automatically once a strategy is activated. The company was founded in 2020 by Ben Rollert, Ananda Aisola, and Ronny Li, and operates under the branding Composer by SoFi. Brokerage services are provided by Composer Securities LLC, an SEC-registered broker-dealer and member of FINRA/SIPC, with clearing handled by Alpaca Securities and Apex Clearing.
Key Features
Pricing & Fees
- Pricing: Starter is $0/month with one automated strategy and unlimited backtesting; Advanced is $10/month with up to 5 automated strategies; Pro is $32/month billed yearly ($384/year) with up to 500 automated strategies and API access. A Business plan for entities is available by booking a call.
- Commission-free trading: Composer charges no commissions and no management fees, though FINRA and SEC regulatory fees apply to securities sales and other fees may apply per its fee schedule.
- No subscription required to start: New users can open an account and automate a first strategy at no cost, then upgrade as their needs grow.
- United States availability: Composer is designed for U.S.-based users; the site's FAQ addresses whether non-U.S. users can sign up.
Who It's For
Composer is aimed at self-directed retail investors and active traders who want systematic, rules-based trading without programming skills. It suits quant-curious hobbyists who want to experiment with backtesting, investors building diversified portfolios of multiple automated strategies, and retirement savers who want tax-advantaged automated trading in a Traditional or Roth IRA. A Business tier also serves entities that need portfolio-level algorithm management, mark-to-market accounting, and full IP ownership of strategies.
FAQ
What is Composer?Composer by SoFi is an automated trading platform and brokerage app for building trading algorithms with AI, backtesting them, and executing trades automatically, all without coding.
Is Composer free to use?Yes, the Starter plan costs $0/month and includes one automated strategy, limited-size strategies, and unlimited backtesting; paid plans (Advanced at $10/month and Pro at $32/month billed yearly) add more automated strategies and features.
Does Composer charge commissions on trades?No, Composer advertises zero commissions and zero management fees, though FINRA and SEC regulatory fees on securities sales and other fees listed in its fee schedule may still apply.
Can I use Composer outside the United States?Composer's FAQ addresses availability for non-U.S. users, and the platform is built around U.S. brokerage accounts; prospective users abroad should confirm eligibility with Composer directly.
Where are assets held with Composer?Accounts are carried and cleared through Alpaca Securities LLC and Apex Clearing Corporation, both SEC-registered broker-dealers and members of FINRA/SIPC, with brokerage services offered by Composer Securities LLC.
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