Composer

Composer

Composer Securities (SoFi) · Coding · Business

Composer is an AI trading platform from SoFi that turns plain-language ideas into automated trading strategies. You describe the goal, backtest it, then let it trade and rebalance.

Interface preview of Composer

About Composer

What Is Composer

Composer is an automated trading platform run by SoFi that lets you build trading algorithms without writing code. You describe a goal, a strategy, or a risk concern in everyday language, and the AI-assisted editor drafts the rules behind it. The platform then runs a backtest on real price history, shows how the strategy would have performed, and executes the trades in a live brokerage account it carries for you.

The product is aimed at people who want a rules-based approach to investing but don't have a quant background. You work with a visual editor instead of Python. Weighting, conditionals, and asset selection are drag-and-drop blocks, so a strategy that would take a coder a weekend takes a newcomer an afternoon. On top of that sits a community feed where you can copy, remix, or invest in strategies other people publish.

There are two limits worth knowing up front. Composer is a US brokerage, so you need to open an account there and meet residency rules. And an automated strategy follows your rules without judgment. If the logic is flawed, it trades the flaw on schedule. The backtest is a filter, not a guarantee, and past results don't lock in future returns.

Getting Started

  1. Go to composer.trade and open a brokerage account. You fill in the usual identity and tax details, and approval usually lands the same day.
  2. Fund the account from a linked bank, or transfer an existing brokerage or IRA and let Composer cover eligible transfer fees.
  3. Build your first strategy. Describe what you want in the AI-assisted editor, pick a pre-built strategy from the library, or remix one from the community feed.
  4. Run a backtest and tune the rules until the behavior matches what you expect.
  5. Turn on automation. The platform then places trades and rebalances on the schedule your strategy defines.
  6. Check in when you want to. You aren't forced to watch it daily, and you keep full control to edit or stop any strategy.

Product Information

A quick look at Composer's pricing, supported platforms, and performance.

Free PlanYes
Paid Plans$0 - $32/mo
PlatformWeb, iOS, Android
DeveloperComposer Securities (SoFi)
CategoryCoding · Business
Release DateOct 2020
Latest UpdatedJan 2026
Website Visits303.5K
Website Global Rank149.8K
API AvailabilityYes

Best for

The users, tasks, and scenarios where this tool fits best.

Users

  • Hands-off index investors
  • DIY quants without code skills
  • Retirement account holders

Tasks

  • Turn an idea into rules
  • Test before you commit
  • Automate rebalancing
  • Tap a community of strategies

Scenarios

  • Testing a market view with small stakes
  • Turning a stalled retirement account active
  • Keeping a portfolio on plan through a volatile stretch
  • Running several small portfolios at once

Key features

Trade with AI

The AI-assisted editor takes a sentence about your goal or risk concern and drafts the strategy for you. You write something like a view on a sector, and it returns a set of holdings and rules you can inspect, edit, and backtest. It's the fastest way in if you have a thesis but not the vocabulary, and every output stays editable in the visual builder.

No-Code Strategy Editor

Every strategy on Composer is a set of drag-and-drop blocks. You set weighting by hand or let it follow inverse volatility, market cap, or equal balance. You add if-then conditionals to steer the logic, and you start from a pool of candidates and sort, filter, and select the ones that qualify. The result is a readable flowchart instead of a script, so you can see exactly why a strategy holds what it holds.

Backtesting and Historical Allocation

Before a strategy goes live, you run it against real price history. The Historical Allocation Graph shows how holdings moved over time, and the model factors in fees and slippage to estimate a final value. You can compare a strategy against a benchmark or against another strategy, then tinker and rerun as often as you like. That loop is where the real learning happens.

Fully Automated Execution

Composer is the brokerage, so automation runs end to end. Once a strategy is active, the platform places trades and rebalances on the schedule your rules define, with no commissions and no management fee. Higher tiers add priority trade timing closer to market close. You set the rules once and the system keeps working without you.

Strategy Community

The community feed is a library of strategies other users have published. You can inspect the logic behind each one, invest in it directly, or remix it into your own version. Categories like Long Term, Technology Focus, and Diversification give you a starting point when you don't want to build from scratch, and publishing your own turns your work into something others can test.

Retirement and IRA Support

Automated strategies run inside Traditional and Roth IRAs, not just taxable accounts. You can transfer an existing IRA over, and Composer covers eligible transfer fees. For anyone who wants active rules inside a tax-advantaged account, this turns a passive default fund into something that follows a plan.

Pros and cons

Pros

  • The no-code editor makes rules-based investing usable for people who've never written a line of code, so the barrier to a real strategy drops to an afternoon.
  • Trade with AI folds strategy creation into plain language, which fits anyone with a market view but no way to express it in rules.
  • Backtesting with fees and slippage modeled gives you a concrete read on a strategy before money is on the line.
  • Commission-free trades and no management fee keep the cost structure simpler than a typical managed portfolio.
  • A single subscription covers every account you open, including IRAs, so you aren't paying per portfolio.

Cons

  • Composer is a US brokerage, so investors outside the residency rules can't open an account, which rules it out for many international users.
  • Automation follows your logic without judgment, so a flawed strategy executes its flaw on schedule until you catch and fix it.
  • The most useful automation features sit behind the Advanced and Pro tiers, so the free plan is limited to a first strategy and smaller builds.
  • A backtest reflects the past, not the future, so strong historical results can still lose money when markets shift.

Frequently asked questions

Composer is an AI trading platform from SoFi for building and running automated trading strategies. You describe a goal in plain language, the platform drafts the rules, backtests them against real history, and trades them in the brokerage account it carries for you.