Composer
Build, backtest, and automate stock and ETF trading strategies with AI and a no-code editor.
About Composer
Composer combines strategy design, historical testing, and automated investing for stocks and ETFs. Start with a plain-language idea, including the risk conditions that matter to you, then adjust the generated rules in a no-code editor. Backtests and benchmark comparisons help you inspect how the strategy behaved in past markets. You can also save and share your work or choose a pre-built strategy. Building and testing carry no subscription charge. Automated trading requires Trading Pass, which includes unlimited backtests, portfolio metrics, deeper analysis, and supported retirement accounts. The annual price is $384, shown as $32 per month, with a 14-day free trial. Sales can incur regulatory fees. Backtests do not predict future results, and automated execution still exposes invested money to loss.
Best for
Best use cases
Testing an AI-generated investment idea against historical market data
Running a rules-based portfolio with automatic trades and rebalancing
Managing algorithmic strategies for a fund or business entity
Compare before choosing
The free tier covers creation and backtesting, while live automation requires Trading Pass
Annual Trading Pass billing lowers the listed monthly equivalent but requires a $384 yearly commitment
Business Account pricing is quoted individually and adds entity-focused accounting, IP, and support features
Features
Turn an investment thesis into rules
Describe a market idea and risk constraints in natural language, then refine the generated strategy in the no-code editor.
Backtest before investing
Compare a strategy with a benchmark and inspect historical return and risk metrics before deciding whether to trade it.
Automate portfolio execution
Run an eligible strategy with automatic trades and rebalancing instead of placing each order manually.
Pros
- A no-code editor and natural-language generation reduce the work needed to express a rules-based strategy.
- The free tier lets users build, backtest, save, and share strategies before paying for automation.
- Trading Pass combines automatic execution, unlimited backtests, analytics, and supported retirement accounts.
Cons
- Automated trading requires a paid pass listed at $384 per year when billed annually.
- FINRA and SEC regulatory fees may still apply when securities are sold.
- Backtest results are historical and do not remove the investment risk of running a strategy with real money.
Pricing Plans
Build and backtest
- AI-assisted trade idea generation and evaluation
- No-code strategy builder and backtesting
- Composer API access for data and stock or ETF trading
- Save, watch, and share strategies
Trading Pass
- Automated strategy investing
- Unlimited strategy backtesting
- Portfolio metrics and in-depth strategy analytics
- Roth, Traditional, and Rollover retirement accounts
Business Account
- Strategy building across markets
- Real-time portfolio management
- API access and mark-to-market accounting
- Full strategy IP ownership and priority support
* Pricing information is for reference only. Please refer to the latest announcement on Composer's official website.