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Meet
Composer

Build trading algorithms with AI, backtest them, then execute—all in one platform. No coding skills required.

Trading. Built better.
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$2B+
trading volume
900,000+
orders executed
5M+
backtests run
As seen on
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AI-powered strategy creation

Explain your goals, strategy, and risk concerns in natural language — our AI-assisted editor will create the strategy for you.

A chat with an AI-powered assistant requesting a strategy that benefits from the demand for GPUs, with a graph and table of the strategy performance compared to the benchmark of SPY.
Abstract representation of strategy being traded and rebalanced, where the current holdings goes from NVDA, AAPL and META, weighted 10%, 50% and 40%, to NVDA, AAPL and META is removed, weighted 50/50.Abstract representation of strategy being traded and rebalanced, where the current holdings goes from NVDA, AAPL and META, weighted 10%, 50% and 40%, to NVDA, AAPL and META is removed, weighted 50/50.

More automation, less worry

Composer executes your trading strategy, making trades and rebalancing automatically.

Discover pre-built strategies

Find strategies you can invest in right away, across a variety of purpose-driven categories, like Long Term, Technology Focus, and Diversification.

Is the 20-day cumulative return of SPY higher than 2%? If so, buy SPY; if not, buy BND

A portfolio that reacts
to the market

Don’t get caught up in emotions and sensationalized tweets. Trade based on data and market movements.

Community

See what others are creating with Composer. Invest directly or make changes. Submit your own strategies to the Community.

Composer is the brokerage

Fully automated trading execution, end-to-end. Create and fund your account in the app.

No commissions on trades

Zero commissions, zero management fees.

Transparent pricing

Simple fixed monthly subscription.
Test for free.

Tax-smart active trading in your retirement account

  • Traditional IRA
  • Roth IRA
  • We'll cover your transfer fees
Learn more
Composer Retirement Image
Composer Trading Pass

One Trading Pass, Unlimited Access

Your Composer Trading Pass unlocks unlimited automated trading

One flat fee, unlimited automated trading across all accounts.
Open multiple accounts for no additional cost.
See pricing

Customize and
Create

Every strategy on Composer is fully editable. Swap out assets, adjust programmatic logic, and tweak parameters.

Use our no-code, visual editor to modify symphonies or create your own from scratch.

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A mockup of the strategy editor, showing how a strategy is built with a mix of specified and dynamic weights, filters and conditional statements, along with a preview of the backtest results.
UI element showing specified weighting: 70% to ICLN, 20% to FSLR and 10% to TSLA

Apply weighting

Custom weight, inverse volatility, market cap or balance equally.

UI element showing conditional statement: If the current price of SPY is greater than the 200d moving average of price of SPY, buy SPY, else, buy BND

If this, then that

Add conditionals to control the flow of logic.

UI element showing an example of a filter: sort these by their 90-day cumulative return and select the top 3: SQ, SPOT, NFLX, AAPL, SHOP, TWLO

Sort, filter, select

Start with a pool of candidates and dynamically select those that meet your criteria.

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Mockup of the backtester, showing a performance graph of the strategy and two other benchmarks, with a table below it showing performance metrics over the selected time period comparing the strategy to the benchmarks

Learn and adapt

Backtest your strategy. Compare it to a benchmark or to another strategy.

Learn from what you see. Tinker and try it out again. And again.

A stacked graph of the changes in strategy holdings over time

The Historical Allocation Graph visualizes movements in a symphony’s holdings over time.

UI element showing an example of strategy value: initial symphony value ($10,000), total fees ($14.02), total slippage ($1,684.08) and final value ($26,205.69)UI element showing an example of strategy value: initial symphony value ($10,000), total fees ($14.02), total slippage ($1,684.08) and final value ($26,205.69)

Model the value of your symphony

Fees, slippage and final value are calculated for you.

Whatpeoplearesaying
Composer is by far the best product I’ve come across in a long time.

It’s an absolute gamechanger.

Xuan X.L.

I've been doing this for 35 years and havenever seen a tool like this. Not even my Bloomberg!

Douglas T.

Composer gives traders and investors at all levels an easy and intuitive way to develop, trade and automate their investment strategies.
Composer opens up to anyone the same level (or better) of tools that top quantitative hedge funds hire armies of PhDs and computer scientists to build internally.
Wow, @ComposerTrade makes it ridiculously simple to create automated trading strategies

@meetnaren

Most automations require you to understand detailed spreadsheets and unique coding languages, the learning curve is often intense with these platforms. That’s not the case at all with Composer.
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Frequently Asked
Questions

About Us

Founded in 2020, Composer's mission is to create investing software that feels fun, stimulating and creative.

We're proud to be leading a movement that makes sophisticated quant investing accessible to all.

Join us!

Our investors

First Round CapitalLeft LaneGolden VenturesAlumni VenturesNot Boring

Ben Rollert

CEO

Ananda Aisola

COO

Ronny Li

CTO

Mikael Staer Nathan

Design

Anja Jamrozik

Product Management

Donovan Doyle

Product Ops

Brian Rubinton

Backend

Alexander Sandberg

iOS

Mike Wadkins

Customer Experience

Kevin Wang

Backend

Serhii Marchuk

Frontend

Jeff Snell

Frontend

Monika Costanzo

Operations

You?

See open positions

Ben Rollert

CEO

Ananda Aisola

COO

Ronny Li

CTO

Mikael Staer Nathan

Design

Anja Jamrozik

Product

Donovan Doyle

Operations

Brian Rubinton

Backend

Alexander Sandberg

iOS

Mike Wadkins

Customer Experience

Kevin Wang

Backend

Serhii Marchuk

Frontend

Jeff Snell

Frontend

Monika Costanzo

Operations

You?

See open positions