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Global Platform
Integrated research, trading, and technology teams operating across Europe, the Americas, and Asia — one seamless investment process.
About Us
A research-driven firm
A research-driven firm
built by mathematicians.
Founded in 2009 by Cambridge Mathematics alumni, PartIII combines deep quantitative research with robust engineering and disciplined risk management — compounding capital responsibly for institutional investors across market cycles.
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Multi-Strategy
Systematic equities, macro, and relative-value strategies built on proprietary data pipelines and advanced statistical modelling.
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Long-Term Partner
Focused on compounding capital responsibly for institutional investors, with a culture that prioritises alignment and transparency.
What We Do
Systematic research.
Systematic research.
Institutional discipline.
PartIII was founded with a shared belief that rigorous quantitative research, robust engineering, and careful risk management can compound capital through market cycles.
We deploy capital across global equities, futures, and FX, combining systematic models with fundamental insight where it adds value. Our focus is on repeatable processes and technology that scales.
Every strategy is built on a foundation of peer-reviewed research, tested against decades of historical data and stress-tested against tail scenarios before deployment.
Join the team- London — Headquarters & Investment
- New York — Americas Trading & Research
- Shanghai — Asia Markets & Data
- Chengdu — Engineering & Infrastructure
Our Platform
Technology at the
Technology at the
core of everything.
We have invested more than a decade building proprietary research infrastructure — from real-time data ingestion and factor modelling to execution management and portfolio construction.
Our engineering teams in London and Chengdu work alongside researchers to compress the cycle from idea to production, maintaining low latency and high availability across all markets.
Our Values
Invested in your growth.
A culture that supports rigorous research, continuous learning, and long-term careers in investing and technology.
Invested in Your Growth
We provide tools, mentorship, and feedback to help talented people build durable careers in markets and engineering. Every employee has access to our internal research library and ongoing education programme.
Led by Investors
Our leadership has spent decades in risk-taking roles. Decisions are grounded in experience and a deep understanding of market risk. We eat our own cooking — partners are invested alongside clients.
Work with the Best
Small, collaborative teams where you learn from colleagues with deep expertise in mathematics, data science, and markets. We hire fewer people and invest more in each of them.
The Trading Desk
Multi-screen execution and live market monitoring across global venues
Research Workstation
Researchers work across multiple screens running live models and backtests
Strategy Sessions
Daily research meetings where quants, engineers and PMs review and challenge ideas
Engineering Floor
Our Chengdu and London engineering teams build and maintain the full trading stack
Leadership
Built by people who
Built by people who
have done it before.
Our leadership team brings together decades of experience across quantitative research, systematic trading, and technology.
James Whitfield
Founder & Chief Investment Officer
PhD Mathematics, University of Cambridge. Former Head of Systematic Strategies at a global macro fund. 20 years in quantitative investment management.
Dr. Sarah Chen
Co-Founder & Head of Research
PhD Statistics, University of Cambridge. Published researcher in machine learning and financial econometrics. Previously at the Alan Turing Institute.
Marcus Reynolds
Chief Technology Officer
MEng Computer Science, Cambridge. Architect of PartIII's proprietary research and execution platform. Previously VP Engineering at a major US hedge fund.
David Park
Chief Risk Officer
MA Mathematics, Cambridge. 18 years in risk management across equities and derivatives. Led risk functions at two top-tier investment banks before joining PartIII.
Locations
Four offices.
Four offices.
One integrated platform.
Our global footprint is a deliberate design — proximity to the world's major financial centres, with a centralised research and risk process.
London
Headquarters & Core Investment Teams
New York
Americas Trading & Research
Shanghai
Asia Markets & Data
Chengdu
Engineering & Infrastructure Hub
Perspectives
Research & insights
Research & insights
from our team.
Our researchers and portfolio managers share thinking on markets, quantitative methods, and the evolving landscape of systematic investing.
Research
Factor Investing in a Changing Macro Regime
How classical equity factors — value, momentum, quality — behave during transitions between low and high volatility regimes, and what systematic managers can do to adapt.
Technology
Machine Learning in Portfolio Construction: Limits & Opportunities
A practitioner's view on where ML genuinely adds alpha in the portfolio construction process, and where classical statistical methods remain superior.
Markets
The Evolving Opportunity Set in Asian Equity Markets
With growing data availability and maturing market microstructure across the Asia-Pacific region, systematic strategies are finding new and durable sources of return.
Careers
Early-career and experienced
Early-career and experienced
opportunities.
Roles in quantitative research, engineering, and investing across our global offices — for those who want to build in markets.
Students & Early-Career
Internships and analyst roles for exceptional students and recent graduates from quantitative and engineering backgrounds. We recruit from all leading universities globally.
Apply nowExperienced Professionals
Roles across systematic equities, macro, data, and core engineering for those with deep domain expertise. We value breadth of perspective alongside technical depth.
Get in touchContact Our Team
Interested in PartIII but don't see a specific role? Reach out directly and we'll be in touch. We are always looking for exceptional talent.
careers@partiii.com