Institutional Class Shares Now Available

On July 1, 2019, shares of the Buffalo Funds were re-designated as “Investor Class” shares and new “Institutional Class” shares were created.

Visit our Frequently Asked Questions (FAQ) page for more information.

A Family of 10 Actively-Managed Mutual Funds

We believe patient investing, backed by solid, intelligent research, can be the best way to achieve long-term financial rewards.

Whether your investment goal is to grow your wealth, preserve wealth, or generate income, we believe there’s a Buffalo fund to help get you there.

Team Based Approach

The Buffalo Funds team-based, idea-sharing management style ensures collaborative decision-making and continuity within our investment process. Our portfolio managers and analysts work as a team to achieve consistent, long-term investment returns.

We believe in organically developing and promoting our investment professionals, ensuring our founding investment principles are carried forward.

Small But Powerful

Agility is essential for boutique firms because their asset pools are affected by volatility, negative performance, or excessive risk more quickly.

The Buffalo Funds maintains a conservative approach to investing, choosing to forego some potential upside returns in favor of minimizing downside returns.


Investment information for financial intermediaries including advisors, broker-dealers, RIAs, and research teams.


Mutual fund information including performance, commentary, holdings, distributions, and prospectuses are available for individual investors.


With international outperforming the U.S. over the last half of 2018, many investors are wondering if they missed the opportunity to increase their exposure to international markets.  Read More



With all the recent volatility, the belief that the market is in a tailspin and it’s time to pull out is widespread, but a look at market fundamentals tells a different story.  Read More



It’s a conversation no one wants to have. However, this is one topic that advisors committed to their clients’ best interests need to broach before the next significant and sustained market drop.  Read More

Performance data quoted represents past performance and does not guarantee future results. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance quoted, quarter-end performance can be obtained here, and month-end performance can be obtained here.
As of October 16, 2019
DISCOVERY FUNDBUFTX$26.70$-0.10-0.37%26.18%
DIVIDEND FOCUS FUNDBUFDX$17.70$-0.01-0.06%18.66%
FLEXIBLE INCOME FUNDBUFBX$15.15$-0.06-0.39%12.16%
GROWTH FUNDBUFGX$27.03$-0.10-0.37%24.16%
HIGH YIELD FUNDBUFHX$11.03$0.000.00%9.26%
INTERNATIONAL FUNDBUFIX$15.66$-0.02-0.13%18.01%
LARGE CAP FUNDBUFEX$33.03$-0.06-0.18%22.51%
MID CAP FUNDBUFMX$15.77$-0.10-0.63%30.55%
SMALL CAP FUNDBUFSX$13.18$-0.10-0.75%24.57%

Inception Date of all Institutional Class Shares is July 1, 2019.

As of October 16, 2019
DISCOVERY FUNDBUITX$26.71$-0.10-0.37%-1.44%
DIVIDEND FOCUS FUNDBUIDX$17.70$-0.02-0.11%2.20%
FLEXIBLE INCOME FUNDBUIBX$15.14$-0.06-0.39%-0.57%
GROWTH FUNDBIIGX$27.05$-0.10-0.37%-0.18%
HIGH YIELD FUNDBUIHX$11.02$0.000.00%1.18%
INTERNATIONAL FUNDBUIIX$15.67$-0.01-0.06%-1.14%
LARGE CAP FUNDBUIEX$33.04$-0.06-0.18%0.76%
MID CAP FUNDBUIMX$15.78$-0.09-0.57%0.96%
SMALL CAP FUNDBUISX$13.18$-0.10-0.75%-4.35%

Featured Articles

Focusing on Midcaps with Secular Growth Tailwinds

Focusing on Midcaps with Secular Growth Tailwinds

Josh West and Chris Carter, Buffalo Mid Cap co-portfolio managers, discuss a variety of issues affecting their investment strategy, including the current interest rate environment, globalization, the growth of ESG investing, and Millennials.

Diversification does not assure a profit, nor does it protect against a loss in a declining market.

Active investing has higher management fees because of the manager’s increased level of involvement while passive investing has lower management and operating fees. Investing in both actively and passively managed mutual funds involves risk and principal loss is possible. Both actively and passively managed mutual funds generally have daily liquidity. There are no guarantees regarding the performance of actively and passively managed mutual funds. Actively managed mutual funds may have higher portfolio turnover than passively managed funds. Excessive turnover can limit returns and can incur capital gains.

Featured Funds

Discovery Fund

Discovery Fund

Total Assets $1.75 Billion  (9/30/19)
Expense Ratio 1.02% / 0.87%
Benchmark Morningstar U.S. Mid Growth

International Fund

International Fund

Total Assets $377.09 Million  (9/30/19)
Expense Ratio 1.06% / 0.91%
Benchmark Morningstar Global Markets ex-US

Emerging Opportunities Fund

Emerging Opportunities Fund

Total Assets $81.71 Million  (9/30/19)
Expense Ratio 1.49% / 1.34%
Benchmark Morningstar U.S. Small Growth

Small Cap Fund

Small Cap Fund

Total Assets $496.89 Million  (9/30/19)
Expense Ratio 1.01% / 0.86%
Benchmark Morningstar U.S. Small Growth

A Note From Our Founder

We believe active portfolio management leads to superior wealth creation and better risk-adjusted results over time. Our investment approach combines top-down trend analysis with bottom-up fundamental company research and then applies a strict valuation discipline to security selection.

The core of our organization is driven by a working philosophy which stresses a team-based investment management structure, independent thinking, in-depth and in-house research, and a long-term focus.

We invest alongside our clients and mutual fund shareholders and have a pride of independent ownership.

~ John C. Kornitzer, Founder Buffalo Funds

About Us

Learn more about the 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.