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Composer

No-code platform for building, backtesting and auto-trading investing strategies

About Composer

Composer lets you assemble strategies called symphonies from visual logic blocks, backtest them, and run them automatically in a brokerage account. Brokerage services come from Composer Securities, with execution and clearing through Alpaca Securities and Apex. It targets retail users who want systematic investing without coding.

Best for: Retail investors who want to automate rules-based portfolios without writing code.

Pros

  • Visual strategy builder
  • Backtest and trade in one place
  • Free entry tier

Cons

  • US only
  • Limited to what the block editor expresses
  • Brokerage account required to trade live

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