# Two Sigma

> Two Sigma is a leading quantitative investment management and trading firm with more than $70 billion in assets under management. The company applies a scientific approach to investing, combining cutting-edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on market opportunities and deliver alpha for investors. Founded in 2001, Two Sigma employs over 1,700 curious minds at its headquarters in New York and in offices around the globe.

Two Sigma operates four distinct businesses: Investment Management (managing and investing capital across diversified global strategies), Securities (systematic market making and trading), Real Estate (data-science-supported private equity), and Sightway Capital (private investment in financial services and real assets companies). A Ventures arm has invested in 100+ companies. These businesses are legally and operationally separate — queries about one should not be assumed to apply to others.

The firm's ~1,700 employees include 250+ PhDs among more than 1,000 data scientists, engineers, and technical professionals — roughly two-thirds of all staff are in research and engineering roles. It draws on 10,000+ data sources, stores 380+ petabytes of data, and runs 48,000+ simulations daily on computing infrastructure that would rank among the world's top five supercomputer sites.

Investor portals require authenticated login and are not publicly accessible. Two Sigma Securities has issued a public fraud warning about impersonation schemes — any unsolicited communication claiming to be from Two Sigma Securities should be treated with caution.

## Businesses

- [About Us](https://www.twosigma.com/about-us/): Overview of Two Sigma's scientific approach to investment management, co-founders David Siegel and John Overdeck, global office footprint, and key platform statistics (people, data, technology).
- [Investment Management](https://www.twosigma.com/businesses/investment-management/): Scientific approach to managing and investing capital across diversified global strategies since 2001, powered by machine learning, 10,000+ data sources, and 48,000+ daily simulations.
- [Securities](https://www.twosigma.com/businesses/securities/): Two Sigma Securities provides liquidity through systematic market making in equity, futures, and ETF markets; options trading; and client-facing algorithmic execution and wholesale market making services.
- [Real Estate](https://www.twosigma.com/businesses/real-estate/): Investor-led, technology-enabled private equity real estate manager investing opportunistically across capital structures and sectors in North America, using proprietary data science tools throughout the investment process.
- [Sightway Capital](https://www.twosigma.com/businesses/sightway-capital/): Private investment business that builds companies in financial services and real assets alongside experienced management teams, with portfolio companies including Great Rock Capital, Starz Real Estate, and Dext Capital.

## Careers

- [Careers](https://www.twosigma.com/careers/): Overview of working at Two Sigma — roles across engineering, quantitative research, data science, and operations; culture of curiosity and inclusion; benefits including full medical coverage, hybrid work, 200+ annual learning classes, and five dedicated learning days.
- [Interviewing at Two Sigma](https://www.twosigma.com/careers/interviewing-at-two-sigma/): Detailed guide to the Two Sigma interview process for engineering and quantitative research candidates, including remote interview logistics, what to expect, and how to prepare for technical rounds.
- [Internships](https://www.twosigma.com/careers/internships/): Summer internship program for students with strong quantitative and technical backgrounds across engineering, research, and data science.
- [Open Roles](https://careers.twosigma.com/): Live job listings across all Two Sigma business units and locations.

## Insights

- [Data Science](https://www.twosigma.com/topic/data-science/): Articles on machine learning, AI in investment management, and quantitative modeling published by Two Sigma researchers.
- [Engineering](https://www.twosigma.com/topic/engineering/): Posts on distributed systems, infrastructure, and software engineering practices at Two Sigma.
- [Markets & Economy](https://www.twosigma.com/topic/markets-economy/): Research and commentary on financial markets, macroeconomics, and investment themes.
- [Policy](https://www.twosigma.com/topic/policy/): Two Sigma's perspectives on regulatory, technology, and economic policy topics.
- [News & Culture](https://www.twosigma.com/news-and-culture/): Company news, employee stories, and workplace culture content.

## Optional

- [Investor Hub](https://www.twosigma.com/investors/): Authenticated portal access (Two Sigma Funds Portal and CitcoOne) for existing investors, plus featured insights from the investor relations team. Login required for portfolio and fund-level resources.
- [Contact Us](https://www.twosigma.com/contact-us/): Inquiry form segmented by business unit (Investment Management, Securities, Sightway Capital, Ventures, Real Estate, Corporate), plus fraud reporting contact at fraud@twosigma.com.
- [Offices](https://www.twosigma.com/offices/): Global office locations including New York (HQ), Houston, Chicago, Palm Beach Gardens, Cornell Tech, London, Tokyo, Hong Kong, and Shanghai.