Two Sigma Brand Guidelines: The 2001 New York Quant Firm Named for Two Greek Letters

A name taken from statistics.

Two Sigma was founded in New York in 2001. English Wikipedia names its founders as John Overdeck, David Siegel and Mark Pickard, and says Overdeck and Siegel had met at D. E. Shaw before leaving to start the new firm; Pickard served as its president from the start until 2006. The company’s own website describes the firm as co-founded by “a computer scientist and mathematician who understood the potential of bringing technology and data to investment management,” and lists Siegel and Overdeck today as co-founders and co-chairmen.

The name is the most designed thing about the firm. According to English Wikipedia, citing the company, it plays on the two uses of the Greek letter sigma in finance and statistics: the lower-case σ stands for volatility, the spread of an investment’s returns against a benchmark, and the upper-case Σ stands for a sum. Adding together the volatilities of individual positions measured against the benchmark, the company has said, is how it amplifies its forecasting signals.

Two Sigma calls itself “a quantitative investment and trading firm that applies rigorous scientific inquiry to uncover value others can’t,” and its about page opens with a short line: “We bring science to finance.” It says it follows principles “rooted in technology and data science as much as those found in financial services,” and names fields such as machine learning and distributed computing as guides. The company gives its staff as about 1,700 people, of whom it says more than 650 hold advanced degrees and more than 250 hold doctorates; these are its own figures. Its website marks the firm’s 25th year with a video series built around employees — a head of news, quantitative researchers, a software engineer and an equities trader.

Four businesses and a scientific method.

Two Sigma divides its work into four businesses, its website says. Investment Management runs “a systematic approach” for a mainly institutional client base; Securities uses a technology-driven quantitative approach to provide liquidity across global electronic markets; Sightway Capital, a private-investment business, builds companies in financial services and real assets alongside experienced management teams; and Real Estate takes what the company calls “a human-led, machine-supported approach” to private property. An academic-outreach programme works with professors and doctoral students.

The company describes its platform in three parts — people, data and technology — and makes large claims for the last two, including hundreds of petabytes of stored data and more than 110,000 simulations a day. Its home page frames the work as a research process: “It starts with a hypothesis.” Offices listed on the site are in New York, Houston, Chicago and Palm Beach Gardens in North America, London in Europe, and Tokyo, Hong Kong and Shanghai in Asia.

Two Sigma has also used public games and competitions to reach programmers. On 2 November 2016 Cornell Tech announced that Two Sigma, in partnership with the university, had publicly launched Halite, a programming game in which players write bots that compete to take over a virtual grid; the game, first developed inside Two Sigma, ran as a three-month competition with a live leaderboard. English Wikipedia adds that a second season, Halite II, ran from October 2017 to January 2018, and that in 2017 the firm ran a trading-algorithm competition on Kaggle, reported by the Financial Times.

Leadership changed in 2024. On 28 August 2024 Hedgeweek reported that the founders would step down from day-to-day management, handing control from 30 September to two new co-chief executives, Carter Lyons, the firm’s chief business officer, and Scott Hoffman, formerly of Lazard. The founders kept their roles as co-chairmen and their stakes, Hedgeweek said, and the firm then employed about 2,000 people, two-thirds in research and development roles.

How hedge funds present themselves.

Hedge funds and quantitative trading firms sell to institutions rather than to shoppers, and most present themselves with very little: a name, a sparse wordmark and a short statement of what they do. Many take money only from pension funds, endowments, foundations, sovereign funds and other professional investors, so their public pages are often written as much for future employees as for clients.

Recruiting is frequently the loudest part of the identity. Firms in this field publish pages aimed at engineers, researchers and graduates, describe their offices and talk about culture as an asset. Bridgewater, for example, has been based on a wooded corporate campus in Westport, Connecticut, since the late 1990s, according to English Wikipedia, and describes its culture as an “idea meritocracy.” Citadel announced in June 2022 that it was moving its headquarters from Chicago to Miami, ABC7 Chicago reported at the time.

Ideas do much of the remaining work. Some firms publish research papers, market commentary or written principles; Bridgewater says its Daily Observations research note has gone to clients for five decades, and its founder’s handbook, Principles, became a book in 2017. Others are known to the public mainly through philanthropic foundations, sponsorships or an occasional annual letter rather than through advertising.

This guide sets out what can be checked about each firm — who founded it, where it is based, how its ownership has changed and what regulators have said — and marks clearly what rests only on the company’s own word. It reports no investment returns and gives no investment advice.

Models, controls and a 2025 settlement.

The firm’s models have also drawn regulatory attention. On 16 January 2025, according to a review of SEC enforcement published by the law firm Morrison Foerster in February 2025, Two Sigma Investments and Two Sigma Advisers settled charges brought by the US Securities and Exchange Commission. The SEC said the firm had recognised but not adequately addressed vulnerabilities in its computer-based trading models between 2019 and 2023, which allowed an employee to change the parameters of a number of models, and that separation agreements used with departing staff had breached the whistleblower-protection rule. Without admitting or denying the allegations, Two Sigma agreed to a cease-and-desist order and a civil penalty; the SEC acknowledged its cooperation and remedial steps, including voluntarily repaying affected clients, strengthening its controls and revising those agreements.

Visually, Two Sigma’s presence is spare and editorial. Its website mixes short declarative headlines — “We discover value in the world’s data” is one — with an insights section split into data science, engineering, markets and economy, and news and culture. Careers pages for internships, engineering and quantitative research sit close to the top of the site, and staff are introduced by first name and role. There are social channels on Instagram, LinkedIn and YouTube. The firm sells no consumer product, and its site shows none.

The name sets a small trap. “Two Sigma” is also a common phrase in statistics, meaning two standard deviations, and the company’s legal name is Two Sigma Investments, LP; its website is twosigma.com. Its private-investment arm trades as Sightway Capital rather than under the Two Sigma name.

For a design guide, Two Sigma shows how a firm can carry its method in its name and keep everything else plain: two Greek letters, a short line about science, and recruiting pages for researchers. Compare D. E. Shaw, where its founders met, and Renaissance Technologies, another quantitative firm. For this guide we use a deep teal, sea glass and mint with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Two Sigma’s identity on hand — save it to a board in the Made Good inspiration library.