Our Team

B.A. – University of Pennsylvania


Osterweis Capital Management


Frank Diebold, CFA

Research Analyst

Frank joined the Buffalo Funds in 2023 and has 12 years of professional investment experience. Prior to joining the firm, he was an analyst at Fundsmith focused on global equities.

Frank received a B.A. in Science, Technology & Society from the University of Pennsylvania and holds the Chartered Financial Analyst designation.

Years of Experience

Years at Buffalo Funds

Fundamental Approach

We get to know the companies we invest in and learn how they run their business.

Top-Down & Bottom-Up

We identify Top-Down broad, secular growth trends and search for companies from the Bottom-Up.

Proprietary Philosophy

We construct our portfolios based on our own proprietary investment strategy.

Disciplined Investing

Sticking to our disciplined investment strategy ensures we maintain a consistent, balanced approach.