The Experiment Fund, anchored in Cambridge, invests in world-changing startups. We catalyze bold ideas & build transformative companies.

Xfund offers experimenters seed capital, expert guidance, and unparalleled access to America's top-tier universities and venture capital firms.

Finally, when we succeed we advance progress, reward risk-takers, and strengthen the community and institutions who support us. More FAQ.

Startups, at their core, are small tribes of experimenters advancing progress.


We Seek...

Bold engineers, entrepreneurs, and designers tackling hard problems. We make seed investments across the East Coast, but remain anchored in the Harvard community, with a focus on information, healthcare, and energy technologies.

  • People: Zealous, resourceful, and resilient co-founders
  • Problem: Hard problems vulnerable to small teams
  • Prototype: Experiments with world-changing implications
  • Potential: Opportunities we are well positioned to catalyze
Patrick Chung

Patrick Chung

Partner, Experiment Fund & Co-head of NEA Seed

Patrick received a joint JD-MBA degree from Harvard Law School and Harvard Business School, where he served as an Editor of the Harvard Law Review. Patrick was a Commonwealth Scholar at Oxford University, where he earned a Master of Science degree. Patrick earned his A.B. degree at Harvard College in Environmental Science. He is a member of the New York and Massachusetts bars, and a member of the Committee to Visit Harvard College. Canadian by birth, Patrick can be found in Palo Alto, CA and London when not in Cambridge, MA.

Hugo Van Vuuren

Hugo Van Vuuren

Partner, Experiment Fund

Hugo received his Masters of Design from the Harvard Graduate School of Design where he was a fellow at the Berkman Center for Internet and Society and the Harvard Graduate School of Engineering and Applied Sciences. A TED Fellow, he earned his A.B. degree at Harvard University in Economics and co-founded startups backed by YCombinator before helping grow Artscience Labs and The Lab @ Harvard as Founding Director. South African by birth, Hugo can be found in New York or Cape Town when not in Cambridge, MA.

Ping Li

Ping Li

Partner, Experiment Fund & General Partner, Accel Partners

Ping received his A.B. from Harvard University, with honors, and an MBA from Stanford University. Ping has over two decades of experience as a technology investor and operating executive in helping build market leading technology companies and product lines. He focuses on early stage, growth software and data center investments. Ping has been named to the Forbes Midas List of Top Tech Investors and Business Insider’s 50 Most Powerful People in Enterprise Tech. When not in Cambridge, Ping can be found in Palo Alto.

Alan Crane

Alan Crane

Partner, Experiment Fund & General Partner, Polaris Partners

Alan received his M.B.A. in 1992 and his B.A. summa cum laude and M.A. in 1986, all from Harvard University and attended Harvard Medical School from 1986 to 1988 before pursuing his business career. Alan invests in life sciences and was previously President and CEO of Momenta Pharmaceuticals, co-founded and served as CEO of Cerulean Pharma, and co-founded Visterra. He serves as Chairman on the boards of  Cerulean Pharma, Visterra, XTuit, and Calorics. Alan can be found in Cambridge, MA and the Longwood Medical Campus.

Harry Weller

Harry Weller

Partner, Experiment Fund & General Partner, NEA

Harry served as an aviator in the U.S. Navy, received his MBA from Harvard Business School, and his bachelors degree in Physics from Duke University. Harry focuses on early stage consumer, enterprise and energy technology investing. He is frequently recognized as one of America’s top venture capitalists, with recent honors including the Forbes “Midas List”, Washingtonian’s “Titans of Technology” and Business Insider’s “Top 5 East Coast VCs”. Harry was born in the Big Apple and is typically found wandering the areas of the east coast.

Collaborators & Advisors

Accel Partners

Palo Alto, CA, New York, NY, London, UK

Andrew McCollum

‘07, Ed.M. ‘11 co-founder of Facebook and angel investor

New Enterprise Associates

Menlo Park, CA & Chevy Chase, MD

Hugo Liu

Ph.D.(MIT), Chief Scientist of Hunch and startup advisor

Polaris Partners

Boston, MA & DogPatch Labs Network

Charlie Cheever

A.B. '03, Founder, Quora,


The largest student-run corporation in the world

John Palfrey

’94, JD ’01, Head, Philips Academy, formerly HLS & Berkman


Experiments Underway

Seed Accelerator for Health Startups
Reinventing Television
Group-based Health
Easy Apartment Search
Products that let parents sleep
Technological innovations that intelligently analyze the world's data for financial professionals
A new view on legal search


Project 1
Project 2
Project 3


The Founders of the Experiment Fund have helped grow companies like Groupon, Facebook, Gilt Groupe, Pulse, Cloudera, Etsy, Lytro, 23andMe, and  We have deep roots in Silicon Valley, New York, and in Harvard Yard, and across the world in Asia and Europe.  We want to tackle big questions. Your ideas, energy, and skill — combined with our capital, experience, and network of company founders, Nobel laureates, and technologists — can change the world.

Contact Us

  • Digitally

t.  @Xfund
p. 1.617.431.6350 (9am - 7pm EDT)

  • On Campus Office:

33 Oxford Street, Maxwell-Dworkin
Cambridge, MA 02138

42°37'87"N, 71°11'69"W

  • Harvard Square Studio:

18 Brattle Street, Suite 201
Cambridge, MA 02138

42°37'32"N, 71°12'00"W

  • Harvard i-Lab:

125 Western Avenue
Allston, MA 02134 



Want to test a bold idea?
Please submit a company summary that covers:

  • The problem you are solving.
  • More about your team.
  • Your experimental solution.
  • What help do you need?

We value people over plans and prototypes over projections.

Send your presentation to: .(JavaScript must be enabled to view this email address)



Who can take advantage of the Experiment Fund?

Everyone, regardless of university affilation, nationality, age, or prior experience. Read more about our Method.

What kind of help can I expect?

We invest seed capital, make our team part of your team, and connect founders with world-class advisors, operators, and top-tier growth financing. Our deep connections in Cambridge, Silicon Valley, and abroad are marshaled in service of achieving your vision.

Do you give grants? Are you an incubator?

The Xfund does not make grants; we make investments. We are also not a cookie-cutter incubator where all teams sign up to templated investment terms.  We make seed investments on a case-by-case basis and partner with the best teams to build transformational technology companies. In that quest we work closely with nationally respected incubators and angel investors.

Get in touch, and let’s talk. See FAQ on Quora.

Partners / Investment Committee: P. Chung, A. Crane, P. Li, H. Van Vuuren & H. Weller 

Headquarters: Cambridge, MA

Founded: 2011

Long hand / Short hand: "Experiment Fund" /  "Xfund"

Download: Logos (.zip)

02138 Favorites: Map of Harvard Square

Founding Press Releases:

01.27.12 Xfund's Launch

06.26.12 Xfund adds Partners & Advisors

Going Forward, read the Experiment Log

Fellow Experimentalists: Samuel Peinado, Robb Fitzsimmons, Even Morikawa and Kathleen Hanley.