Fellows Directory

Jason Portnoy

Oakhouse Partners

Jason Portnoy is Managing Partner at Oakhouse Partners, a firm whose mission underscores his deep commitment to discovering and supporting talented entrepreneurs pursuing important challenges. He founded the boutique firm Subtraction Capital in 2012, which later evolved into Oakhouse Partners, and has spent his entire career contributing to some of Silicon Valley’s most impactful technology companies.

Oakhouse invests in early-stage companies in the San Francisco Bay Area and in Salt Lake City, Utah. Jason is a generalist investor because it allows for cross-pollination of ideas and best practices across sectors.

Before Oakhouse, Jason’s innate curiosity led him to angel investments in several ground-breaking companies including Facebook, Palantir Technologies, and Stemcentrix. He acquired senior leadership experience as the first CFO at Palantir, where he helped guide the company’s early culture, fundraising strategies and industry leadership positioning, and later did the same for Practice Fusion.

Previously, Jason gained privileged insight into the formation and rapid growth of asset management firms as part of the founding team of Clarium Capital, which grew to over $3B under management during his tenure, and part of the launching of the Founders Fund, whose early investments included Facebook and Palantir.

Jason started his career at PayPal as employee number 34 while still a graduate student at Stanford. As a Vice President on PayPal’s Finance team, he helped support the company through its hyper-growth, IPO, and subsequent $1.5B acquisition by eBay in 2002.

Education, Personal, and Fellowship

Jason holds a bachelor’s degree, with High Distinction, in chemical engineering from the University of Colorado and a master’s degree in management science and engineering from Stanford University.

Jason served his fellowship at Oakhouse Partners as a member of Class 21 under the mentorship of Sham Sandhu, an independent investor.