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Big news:Composer has joined SoFi!Read the blog post

Meet
Composer

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

Trading. Built better.
Get started
$37B+
trading volume
18M+
orders executed
2M+
account rebalances
As seen on
Wall Street JournalMoney Stuff

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

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.

* Other fees may apply, see full fee schedule for more information

Tax-smart active trading in your retirement account

  • Traditional IRA
  • Roth IRA
  • We'll cover your transfer fees (*Limits apply)
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

* Other fees may apply, see full fee schedule for more information

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
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.

* Other fees may apply, see full fee schedule for more information

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 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.
Sign up

Third-party testimonials may not be representative of the experience of all clients and may not be indicative of future performance or success.

Frequently Asked
Questions

About Us

Founded in 2020, our 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!

Previously backed by

First Round CapitalLeft LaneGolden VenturesAlumni VenturesNot Boring

Ben Rollert

Founder

Ananda Aisola

Co-founder

Ronny Li

Co-founder

Mikael Staer Nathan

Design

Anja Jamrozik

Research

Vincent Côté-Roy

Engineering

Serhii Marchuk

Web

Joshua Shevach

Web

JB Chouinard

Backend

Alexander Sandberg

Mobile

Michael Liu

Marketing

Mike Wadkins

CBO *

Nellie Wise

Brokerage Ops *

All employees listed are employed and associated with Composer Technologies, Inc. except those notated with *(asterisk). These individuals are registered and affiliated with Composer Securities LLC.

Ben Rollert

Founder

Ananda Aisola

Co-founder

Ronny Li

Co-founder

Mikael Staer Nathan

Design

Anja Jamrozik

Research

Vincent Côté-Roy

Engineering

Serhii Marchuk

Web

Joshua Shevach

Web

JB Chouinard

Backend

Alexander Sandberg

Mobile

Michael Liu

Marketing

Mike Wadkins

CBO *

Nellie Wise

Brokerage Ops *

All employees listed are employed and associated with Composer Technologies, Inc. except those notated with *(asterisk). These individuals are registered and affiliated with Composer Securities LLC.

[email protected]

Securities products and brokerage services are offered by Composer Securities LLC, a broker-dealer registered with the SEC and member of FINRA / SIPC. Composer Securities LLC and Composer Technologies Inc. are separate but affiliated companies. Accounts are carried and securities execution, clearance and settlement services are provided by Alpaca Securities LLC, and Apex Clearing Corporation, SEC-registered broker-dealers and members of FINRA / SIPC. Alpaca Securities is a wholly-owned subsidiary of AlpacaDB, Inc. Apex Clearing Corporation, is a wholly-owned subsidiary of Apex Fintech Solutions Inc. Check the background of Composer Securities LLC, Alpaca Securities LLC, and Apex Clearing Corporation on FINRA BrokerCheck . This is not an offer, solicitation of an offer, or advice to buy or sell securities or open a brokerage account in any jurisdiction where Composer Securities is not registered. Securities products offered by Composer Securities are not FDIC insured

With any investment, your capital is at risk. The value of your portfolio with Composer can go down as well as up. Past performance is no guarantee of future results. By using this website, you accept our Terms of Service, Privacy Policy, and Payment Agreement.

Please see Composer Securities' Customer Relationship Summary.

Keep in mind, investing involves risk. Examples are for illustrative purposes and are not a recommendation, an offer to sell, or a solicitation of an offer to buy any security. Past performance is no guarantee of future results.

Online trading has inherent risk due to system response, execution price, speed, liquidity, market data and access times that may vary due to market conditions, system performance, market volatility, size and type of order and other factors. An investor should understand these and additional risks before trading.

Options trading involves significant risk and is not appropriate for all investors. Prior to buying or selling an option with Composer Securities LLC, please read the "Characteristics and Risks of Standardized Options," also known as the Options Disclosure Document (ODD). You can access the ODD by clicking here. Options transactions are often complex and can expose investors to potentially rapid and substantial losses. In some cases, you may lose your entire investment in a relatively short period. Furthermore, certain complex options strategies carry additional risk, including the potential for losses that may exceed your original investment amount.

Please read important legal disclosures.

Composer Securities does not provide tax advice. This material is for informational purposes only and is not intended to be a substitute for consultation with a qualified tax professional before making any investment decisions.

The cash sweep program is made available in coordination with Apex Clearing Corporation through Composer Securities. Please read the Important Disclosures for more information.

Composer Securities is a member of SIPC, which protects securities customers of its members up to $500,000 (including $250,000 for claims for cash). Explanatory brochure available upon request or at www.sipc.org. SIPC does not protect against market losses.

Securities products are: Not FDIC insured · Not bank guaranteed · May lose value

Trademarks and logos are the property of their respective owners and do not represent endorsements of any kind. Unless otherwise noted, Composer Technologies Inc., Composer Securities LLC, and its affiliates are not partners, affiliates, or licensees of these companies.

© 2026 All rights reserved.

Important Disclosures

Naren S. is a client of Composer Technologies Inc. and is not being compensated for sharing their opinion and experience with our firm. Any compensation creates a conflict of interest and Naren S.'s comments may not be representative of any other person's experience with the firm.

Xuan X.L. is a client of Composer Technologies Inc. and is not being compensated for sharing their opinion and experience with our firm. Any compensation creates a conflict of interest and Xuan X.L.'s comments may not be representative of any other person's experience with the firm.

Douglas T. is a client of Composer Technologies Inc. and is not being compensated for sharing their opinion and experience with our firm. Any compensation creates a conflict of interest and Douglas T.'s comments may not be representative of any other person's experience with the firm.