Our Team


M.B.A. – University of Chicago
B.B.A. – University of Toledo


BancOne Investment Advisors
Duff & Phelps

Jeff Sitzmann, CFA

Portfolio Manager

Jeff joined the Buffalo Funds in 2002 and has 36 years of professional investment experience. From 1997 to 2002, Jeff worked at BancOne Investment Advisors as a Fixed Income Analyst. From 1992 to 1997, he worked at Anthem as a Fixed Income Analyst. From 1987 to 1992, Jeff worked at Duff & Phelps as a Co-portfolio Manager and Investment Analyst.

At the Buffalo Funds, Jeff works with both equity and fixed income portfolios, and his focus areas include media, consumer staples, and industrials.

Jeff received a B.B.A. from the University of Toledo and an M.B.A. from the University of Chicago. He also holds the Chartered Financial Analyst designation.

Years of Experience

Years at Buffalo Funds


Dividend Focus Fund

Dividend Focus Fund

Total Assets $117.28 Million  (12/31/21)
Expense Ratio 0.94% / 0.79%
Benchmark Morningstar U.S. Large-Mid Cap

Manager since 2018
High Yield Fund

High Yield Fund

Total Assets $301.47 Million  (12/31/21)
Expense Ratio 1.03% / 0.87%
Benchmark ICE BofAML U.S. High Yield

Manager since 2007

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.