Meet
Composer

The investment app that helps you achieve superior returns with logic and data.

Investing. Built better.
Get started
$100m+
trading volume
150,000+
orders executed
500,000+
backtests run
As seen on
MashableNew York PostIntuit MintEntrepeneurBenzingaCNET
After a decade+ bull run, the market is changing. Is your portfolio?
Picking stocks is difficult.
The chart doesn’t only go up – it can also go down.
Protecting your money in the face of inflation and economic uncertainty requires more than a robo-advisor and a prayer.
You deserve a smarter option that responds to market movements without endless hours of research and screen time.
Investing
Built Better
Composer offers an array of professionally-created investment strategies that trade based on logic and data.
  • Smart algorithms
  • Test before you invest
  • Automated trading
A mockup of a strategy card showing the performance graph and performance metrics, with the "invest" button highlighted
Smarter investing made simple
Take advantage of advanced algorithmic trading. 
No PhD required, just point and click.
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.
A table of strategies that have been invested in, showing live performance metrics and asset holdings
More automation, less worry
Composer is your portfolio’s watchdog - constantly monitoring your portfolio, rebalancing positions and only trading when necessary.
An example of the automatically generated text description of a strategy. Every month, pick two assets from the list below with the highest 20-day cumulative return and weigh the picks equally: FB, AMZN, AAPL, MSFT, GOOGL, PYPL, ADBE, NVDA
Capture upside with downside protection
Composer can move your portfolio into its best performers when the market is doing well, and hedge risk during volatility.
See how each strategy works in plain language

How do I get started?

Create an account
Free to sign up. Fill out your personal details, then set up and fund your Composer brokerage account.
Get started
Browse our symphonies
Explore momentum, paired switching, and other hedge fund-like styles. Open up a strategy to see how it works, view its performance and live holdings, and even backtest it.

What is a symphony?
A symphony is Composer’s version of an automated investment strategy.

Featured

New strategies, interesting ideas, and diverse viewpoints. Check out these symphonies for continued inspiration.

New strategies, interesting ideas, and diverse viewpoints. Check out these symphonies for continued inspiration.

Big Tech MomentumTake a look! These are interactive.Stocks or Bonds: Ride the WinnerBuy the Dips: Nasdaq 100Crude Reality: The Smarter Oil Playbook
Composer's Picks

New strategies, interesting ideas, and diverse viewpoints. Check out these symphonies for continued inspiration.

Favorites from Composer’s Investment Committee.

Hedgefundie's Excellent Adventure RefinedRisk On or Risk Off Leveraged S&P 500The New 60/40Dynamic Income
The bottom half of a strategy card showing changes in today's performance as dollar and percent, with the Invest and Follow buttons side by side, and the Follow button highlighted.
Follow symphonies to see how they perform in real time, without committing to an investment.
A mockup of the portfolio page in the app, showing portfolio metrics (value, today's changes and cumulative return), a large graph of total lifetime portfolio performance, and the table of invested symphonies showing individual live performance metrics.
Invest and let Composer take care of the rest
A mockup of the portfolio page in the app, showing portfolio metrics (value, today's changes and cumulative return), a large graph of total lifetime portfolio performance, and the table of invested symphonies showing individual live performance metrics.
Trades are made automatically, and you can track performance of each symphony individually, as well as your complete portfolio.

Start a membership to automate your trading.

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.

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.

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.

What people are saying

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 have never 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.
Sign up

Frequently Asked
Questions

How do I get started?

Click Sign Up and create an account in under 90 seconds by answering a few simple questions and funding your account using a bank account. Once funded, you can invest in a pre-made symphony or create your own.

Note: funding transfers usually take about 24 hours to show up in your account.

What fees does Composer charge?

See our pricing page for details.

Please note that sales (i.e., selling a stock or ETF) are subject to regulatory fees. Composer does not benefit from these fees, and all proceeds go directly to the Securities and Exchange Commission (SEC) and Financial Industry Regulatory Authority (FINRA). More information is available from our brokerage partner, Alpaca.

How are trades executed, and who is Alpaca?

Trades execute on weekdays between 3:00 pm ET and market close. Brokerage services are provided through our partner, Alpaca.

Alpaca Securities is a member of SIPC, and securities in your account are protected up to $500,000. For details, please visit www.sipc.org.

Can non-US residents use Composer?

Unfortunately, we are not able to support non-US residents at this time.

Where will my assets be held?

Our brokerage partner, Alpaca, is a member of the Financial Industry Regulatory Authority (FINRA) and Securities Investor Protection Corporation (SIPC). Through SIPC, securities in your account are protected up to $500,000. For details, please visit www.sipc.org. Further, assets are held with custodian banks, Silicon Valley Bank and BMO Harris.

Who is Composer?

Composer is a Registered Investment Advisor with the Securities and Exchange Commission. Our legal and compliance counsel are Lowenstein Sandler and Greyline LLC, respectively. We are backed by tier-one venture capital firms, including First Round Capital, who were investors in Square and Uber.

About Us

What if the experience of managing investing strategies not only didn’t suck, but actually delighted? Our mission is to create investing software that feels fun, stimulating and creative.

Our investors

First LaneLeft LaneGolden VenturesAlumni VenturesNot Boring

The team