Composer
Automated trading platform where you build rule-based strategies with AI or a no-code editor, backtest and execute them.
Composer is an automated trading platform and brokerage app. Composer lets users write rule-based strategies by describing them to an AI editor or arranging blocks in a no-code editor, backtest those strategies on historical data, and then have trades and rebalancing carried out automatically. A Starter plan has no subscription cost.
Best for Self-directed investors who want to trade by explicit rules and test them first, without writing code.
- Listed in
- Finance & Accounting
- Platforms
- Web, API
- Pricing model
- Freemium
- Free plan
- Yes
- API
- Yes
- Made by
- Composer Technologies, Inc.
- Added
Last verified: . Information taken from composer.trade.
What is Composer?
Composer is an automated trading platform and investment app, presented on its site as Composer by SoFi, where users create rule-based strategies called symphonies, test them on historical data and let the platform trade them. A strategy can be drafted by describing goals and risk concerns in plain language to an AI-assisted editor, or assembled in a visual no-code editor using weighting methods, if-then conditions and filters that select assets from a pool. Backtests compare a strategy with a benchmark and account for fees and slippage. Once funded, the platform places trades and rebalances automatically. Users can also start from pre-built strategies or copy and modify ones shared by the community. Composer acts as the brokerage through Composer Securities LLC, supports individual, business, Traditional IRA and Roth IRA accounts, and offers Starter, Advanced, Pro and Business plans.
Key Features
Trade with AI
Converts a plain-language description of an investing idea into an editable strategy.
No-Code Visual Editor
Builds logic from blocks for weighting, conditional branches and sorting or filtering candidate assets.
Backtesting
Runs a strategy on past data, charts historical allocations and compares results with a benchmark or another strategy.
Automated Execution
Places the trades a strategy calls for and rebalances the account without manual orders.
Pre-Built and Community Strategies
Offers ready-made strategies by category and lets users remix or publish their own.
API Access
Lets Pro and Business users pull data, run backtests and trade through their strategies programmatically.
How Composer works
Describe or build a strategy
Explain your goals to the AI editor or assemble the rules in the visual editor.
Backtest it
Check how the rules would have behaved historically and compare with a benchmark.
Adjust
Swap assets, change logic or tweak parameters and test again.
Invest
Fund the account and let the platform execute trades and rebalance automatically.
Use Cases
- Turning an Idea into Rules
- Describe a theme, such as demand for GPUs, and get a draft strategy to inspect.
- Testing Before Funding
- Backtest a rule set against a benchmark before putting money behind it.
- Hands-Off Rebalancing
- Let the platform rebalance a rules-based portfolio on schedule.
- Systematic Trading in an IRA
- Run automated strategies inside a Traditional or Roth IRA.
- Adapting a Shared Strategy
- Copy a community strategy and change its assets or parameters.
Things to know
- Investing involves risk
- The site states that capital is at risk, portfolio value can fall as well as rise, and past performance does not indicate future results.
- Not investment or tax advice
- Composer says its examples are illustrative, not recommendations, and that Composer Securities does not provide tax advice.
- Plan limits
- Plans differ in how many strategies can be automated and how large a strategy can be, measured in nodes.
- Other fees
- Zero commissions and management fees are advertised, but FINRA and SEC regulatory fees apply to sales and a separate fee schedule exists.
FAQs
What is Composer?
Composer is an automated trading platform for building, backtesting and executing rule-based investment strategies. Strategies can be created with an AI-assisted editor or a no-code visual editor.
What is Composer used for?
Composer is used to define trading rules, test them on historical data and have the platform trade and rebalance an account according to those rules.
Is Composer free?
Yes, Composer has a Starter plan with no subscription cost that lets you automate one strategy. Regulatory fees on sales and other fees in the fee schedule can still apply.
How much does Composer cost?
Composer offers Starter, Advanced, Pro and Business plans. Paid plan figures are not given here because the currency could not be confirmed; see the official pricing page.
Do I need to code to use Composer?
No. Composer says no coding skills are required; strategies are built by describing them to the AI editor or by using the visual editor.
Does Composer have an API?
Yes. Composer lists full API access on the Pro plan and includes API access with Business accounts.
Is Composer a broker?
Yes. Composer runs its own brokerage arm, Composer Securities LLC, which is an SEC-registered broker-dealer. Two further firms, Alpaca Securities and Apex Clearing, carry the customer accounts and settle trades.
Who it's for
- Retail investors
- Active traders
- Quant hobbyists
- Business entities
Comments
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