Overview
Arrowstreet Capital is a Boston-based systematic investment firm that manages global equity portfolios for institutional investors. It is a private partnership, and its contact page lists one office, at 200 Clarendon Street in Boston.
Its strategies are global equity, in long-only, alpha extension and long/short beta neutral forms.
As of 30 June 2026 the firm reports more than $344 billion in assets under management, more than 440 clients and more than 500 employees.
As of June 2026, Arrowstreet dates from 1999, when Bruce Clarke, then CEO of PanAgora Asset Management, founded it with John Y. Campbell and Peter Rathjens, also PanAgora executives.
The research team builds the models behind investment decisions, and its quantitative researchers bring finance and statistics to testing new ideas. Portfolio managers focus on risk, execution and strategy, and turn the models into live performance. Investment Services manages the investment inputs, oversees outsourced middle-office services and supports the portfolio managers.
Programmes
Summer Internship Program
The internship lasts 10 weeks and teaches quantitative investment management. Projects draw on finance, statistics, applied maths, programming and optimisation theory.
You work with experienced staff on investment research, data analysis, portfolio management and technology development, and you can present your work to senior leaders.
Interns join one of six teams: Investment Services, Investment Processes, Portfolio Management, Research (Quantitative Development), Research (Quantitative Research) and Technology.
Summer 2027 internships
All four Summer 2027 internships are in Boston:
- Quantitative Researcher Intern: you work side by side with the Research group and run a research project from the first stages through analysis, then present it to the team and stakeholders. The work includes portfolio construction research on Arrowstreet's own simulation tool.
- Quantitative Developer Intern: you join the Research team, whose Quantitative Development group builds the tools, APIs and libraries used to generate, evaluate and put investment ideas into production.
- Investment Processes Intern: you join the group behind the automated processes used in investment decisions and trading, and write and maintain code that analyses portfolio attribution and performance.
- Software Engineer Intern: you write code to firm standards with AI assistants.
Rotational programmes and graduate roles
The Technology Rotational Program lasts 18 months and is for recent graduates going into software development in financial services.
As of May 2026, the programme for May/June 2026 graduates ran like this:
- Introductory sessions led by technology leaders in the first few weeks.
- Rotations through technology teams that support research, portfolio management, trading, investment data and investor account management.
- Networking events with senior leadership.
- At the end, the chance to join a team that fits your skills and interests.
- Entry: a bachelor's degree in computer science, software or computer engineering, IT, maths, data science or electrical engineering, finished in May/June 2026.
The Investment Services Rotational Program lasts two years. It covers investment management, the trade lifecycle and portfolio management, and you rotate through several functions.
Arrowstreet's student careers page says recent graduates can join as quantitative researchers or developers, working on investment strategies, signal backtests and data platforms. On 6 November 2026 the full-time researcher role on the campus board recommended one to three years of relevant experience, and the developer role required it.
Neither rotational programme had a posting on the campus board on 6 November 2026.
Application
Apply through the Apply Now button on the Student Careers page. It opens Arrowstreet's Workday campus board, which lists the internships and the full-time researcher and developer roles.
Degree rules differ by posting:
- Quantitative Researcher Intern: an undergraduate or graduate programme in finance, maths, economics or a closely related quantitative or financial subject.
- Quantitative Developer Intern: an undergraduate or graduate programme in a technical field such as computer science or engineering.
- Investment Processes Intern: a graduate programme in finance, maths, economics or a closely related subject.
- Software Engineer Intern: an undergraduate programme in computer science or a related technical field, graduating in May/June 2028.
The researcher, developer and investment processes internships expect you to finish your degree within a year of the internship.
Arrowstreet says it never uses social media, messaging platforms or apps to offer you a job. Its fraud alert page has a contact for checking whether a message comes from the firm.
Online assessment
No official online assessment is documented.
Interviews
Arrowstreet does not publish its interview format. Each posting lists the skills the team wants:
- Quantitative Researcher Intern: probability, statistics, linear regression, time series, linear algebra, calculus, optimisation and portfolio theory, plus econometrics or regression applied to economics. You need experience with a statistical computing environment such as Python, R, STATA or MATLAB, and experience using LLMs and coding agents in research is a plus.
- Quantitative Developer Intern: software design, data structures and numerical algorithms, plus probability and statistics including linear regression and time series. Interns solve quantitative problems in Python or R. You need an interest in markets, but finance experience is not required.
- Investment Processes Intern: probability, statistics and linear regression, mathematical programming in Python or another scripting language, and knowledge of financial markets and asset pricing from work or study.
- Software Engineer Intern: Python, C#, .NET, SQL or another object-oriented language, and a basic understanding of agentic AI technologies and frameworks.
Know how research turns into trades here. The Research group comes up with an investment idea, codes it as a signal, backtests it, and turns it into return, risk and trading cost forecasts that drive trading decisions.
Quant Finance Symposium
As of September 2025, the Quant Finance Symposium was a one-day programme, run in-house, for first- and second-year undergraduates, with keynote speakers, panel discussions, workshops and networking.
As of September 2025, you applied with a resume and a cover letter answering why you wanted a place and what you hoped to gain. The listing for the November 2025 event went up on 23 September 2025 and came down on 6 October 2025.
Eligibility differed between the two listings: as of November 2024 the one then open was for women in the first or second year of an undergraduate or master's degree, and as of September 2025 it was for first- and second-year undergraduates.
How to prepare
- Practise explaining a linear regression out loud: what each coefficient means and when the fit misleads you. The researcher, developer and investment processes postings all list it.
- Apply now for Summer 2027. The researcher and developer internships have been open since 7 Aug 2026 and no posting lists a deadline. For Summer 2028, start checking the campus board in August.
- Bring one small backtest you built in Python or R, with a chart of the result, and be ready to walk through it from the data to the conclusion. The researcher posting asks you to explain empirical findings clearly, including with data visualisations.
- For the researcher internship, put portfolio theory and optimisation near the top of your list. Interns do portfolio construction research on the firm's own simulation tool.
- For Investment Processes, learn how performance attribution splits a portfolio's return into its sources, and revise asset pricing. Interns write code that analyses attribution and performance.
Practise:Probability practice
Practise on TraderMaths
Practise probability and statistics before you apply to Arrowstreet. Related guides: Two Sigma and G-Research.
