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Aries

Open-source fintech trading platform with APIs

Overview

Aries provides an open-source fintech platform with brokerage services through Ram Financial LLC (FINRA/SEC) and Apex Clearing for clearing. Its products include Aries Engine (open-source API toolkit), Aries Infinite (a customizable trading platform with an infinite canvas), and Aries Mobile (an open-source mobile trading app), offering commission-free trading on stocks, ETFs, options, and futures, plus no-fee Roth and Traditional IRAs. It differentiates itself by delivering an open-source framework that lowers regulatory, data licensing, and infrastructure barriers for developers to build financial applications, serving both retail investors and developers. Its goal is to accelerate fintech innovation by enabling a broad developer ecosystem and accessible, commission-free trading for retail users.

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About Aries

Simplify's Rating
Why Aries is rated
C+
Rated C on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & AnalyticsEnterprise SoftwareFintechFinancial Services

Company Size

11-50

Company Stage

Seed

Total Funding

$7M

Headquarters

San Francisco, CA

Founded

2021

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What believers are saying

  • Thomas Peterffy led Aries’ $7 million seed round on October 22, 2026.
  • Michigan backed Aries’ Detroit headquarters move with a $250,000 grant and job support.
  • Aries is hiring across engineering, design, product, and operations in Detroit, New York, and remote.

What critics are saying

  • FINRA, SEC, CFTC, and NFA oversight can freeze products after one violation.
  • Aries depends on Apex, Advantage Futures, and ForecastEx for custody, clearing, and events.
  • Interactive Brokers and Robinhood can copy its canvas and prediction-market features faster.

What makes Aries unique

  • Aries combines brokerage, developer APIs, and an AI-built trading canvas in one stack.
  • Reda Falih’s team built finance.dev and an MCP server for tool-driven trading.
  • On October 30, 2026, Aries added ForecastEx prediction markets to Aries Mobile.

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Funding

Total Funding

$7M

Above

Industry Average

Funded Over

1 Rounds

Notable Investors:
Seed funding is usually the first official round after pre-seed, when a startup has a prototype or concept. It’s typically used to develop the product, test the market, and start building the team. Investors here are often angel investors or early-stage venture capitalists.
Seed Funding Comparison
Above Average

Industry standards

$3.3M
$2M
$2.3M
$3M
$7M

Benefits

  • Health Insurance
  • Paid Vacation
  • Tuition Reimbursement
  • Remote Work Options

Company News

Cointime
Oct 22nd, 2026
Aries raises $7M seed led by Thomas Peterffy for AI-powered trading platform

Stock trading platform Aries has raised $7 million in seed funding, led by Thomas Peterffy. Kleiner Perkins, Collision, John Paulson, and 638 users also took part in the round. Aries is building a stock trading platform and has launched Aries Infinite. The company describes it as an infinitely scalable trading canvas where users can build components one by one or ask AI to generate trading interfaces.

Capitol News
May 18th, 2026
Gov. Whitmer announces 144 new jobs and $4 million investment in Wayne, Oakland counties.

Gov. Whitmer announces 144 new jobs and $4 million investment in Wayne, Oakland counties. May 18, 2026 Governor Gretchen Whitmer announced on May 18 two business expansion projects in southeast Michigan that will create over $4 million in capital investment and 144 new jobs. The investments are being made by Aries, a financial technology company, and Pratt Miller Engineering & Fabrication, LLC. The announcement is significant for local economic growth as it highlights Michigan's efforts to attract next-generation industries such as financial technology and motorsports. Whitmer said, "Michigan is on the move and open for business, competing for and winning big projects in next-generation industries from financial technology to motor sports and more. Today's announcement will create 144 new good-paying jobs and help cement Michigan as the best place for thinking and building the next big thing." Aries plans to invest at least $1 million by relocating its global headquarters to Detroit, which will serve as both its customer operations center and compliance hub. This project is expected to create at least 94 jobs with starting wages of $33 per hour plus benefits. Reda Falih, CEO of Aries, said, "Aries is incredibly excited to launch this project, and we are deeply grateful to the Michigan Economic Development Corporation and Team Michigan for this strategic partnership, which is instrumental to our vision of contributing to Detroit's growth as a national and international FinTech hub." The relocation has been supported by a $250,000 performance-based grant from the Michigan Business Development Program (MBDP). Additional workforce support comes from Michigan Works! valued at over $1 million. Pratt Miller Engineering & Fabrication plans nearly $3 million in capital investment through expanding two facilities in New Hudson over three years. This expansion will add about 24,000 square feet of space while creating an additional 50 engineering and skilled manufacturing jobs. Matt Carroll, CEO of Pratt Miller said: "Pratt Miller is proud to partner with the Michigan Economic Development Corporation as we continue investing in the future of our business in New Hudson... We're excited to continue growing in our home state alongside partners who share our commitment to advancing industry." Support includes an MBDP performance-based grant along with retention services from Lyon Township. Matt McCauley of the Michigan Economic Development Corporation said these expansions show how important it is that "the state [has] the ability to work with Michigan companies" so their growth happens locally. Local leaders also welcomed these developments; Kevin Johnson of Detroit Economic Growth Corporation said Aries' decision shows "the rest of the country is taking notice of Detroit's rising profile in tech." Amy Allen from Lyon Township noted that Pratt Miller's continued growth "reflects the strength of our community as a place where innovative businesses can thrive." Whitmer leads the executive branch overseeing state operations based out of Lansing; she has served since January 2019 after helping pass bipartisan budgets focused on infrastructure, education, and health care according to the official website.

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