Quick Facts
Inception Date:4/16/20017/1/2019
Expense Ratio:1.02%0.87%
Total Net Assets:$1.80 Billion  (12/31/19)
Category:Mid Cap Growth
Benchmark:Morningstar U.S. Mid Growth
Related Material:
   Fund Fact Sheet Q4 2019
   PM Commentary Q4 2019
   Summary Prospectus
For a full transcript of this video, click here.
Innovation in Action

Portfolio Managers Clay Brethour and Dave Carlsen discuss how their focus on secular growth trends and innovation helps drive their investment strategy for the Buffalo Discovery Fund.

“Innovation in its most simple terms is change for the better. We look for companies that embrace change, think differently, think outside the box to create something new…”
  ~ Dave Carlsen, CFA, Co-Portfolio Manager

Morningstar Rating


Overall Morningstar Rating™ of BUFTX based on risk-adjusted returns among 568 Midcap Growth funds as of 2/29/20.

Investment Style

The investment objective of the Buffalo Discovery Fund is long-term growth of capital.

The Fund managers seek to identify companies expected to benefit from innovation and experience growth based on the identification of long-term, measurable secular trends, and which, as a result, the managers believe may have potential revenue growth in excess of the gross domestic product growth rate.

Companies engaged in innovative strategies are those who, in the Fund managers’ opinion, are engaged in the pursuit and practical application of knowledge to discover, develop, and commercialize products, services, or intellectual property.

Companies are screened using in-depth, in-house research to identify those which the Fund managers believe have favorable attributes, including attractive valuation, strong management, conservative debt, free cash flow, scalable business models, and competitive advantages.

To us, innovation means to discover and transform new ideas into meaningful commercial value. The greater the economic impact and the longer the staying power, the better.

We seek under-appreciated stock opportunities in companies where thoughtful management teams are in a favorable position to use innovation for market advantage and sustained shareholder value creation.

Clay Brethour, CFA, Co-Portfolio Manager

Performance (%)

As of 2/29/203 MOYTD1 YR3 YR5 YR10 YR15 YRSince Inception
BUFFALO DISCOVERY FUND - Investor-4.68-5.206.8611.368.7713.5510.809.14
BUFFALO DISCOVERY FUND - Institutional-4.67-5.206.9911.528.9313.7210.969.30
Morningstar U.S. Mid Growth Index-3.07-4.429.5413.979.5213.419.978.03
Morningstar Mid-Cap Growth Category-4.03-5.506.8011.188.2212.148.826.79
As of 12/31/193 MOYTD1 YR3 YR5 YR10 YR15 YRSince Inception
BUFFALO DISCOVERY FUND - Investor4.3631.6331.6315.5611.4714.3010.899.70
BUFFALO DISCOVERY FUND - Institutional4.3931.8231.8215.7311.6314.4711.069.53
Morningstar U.S. Mid Growth Index8.3136.0136.0118.2911.8414.0410.278.36
Morningstar Mid-Cap Growth Category8.0532.3032.3015.429.9812.198.467.17
For performance prior to 7/1/19 (Inception Date of Institutional Class), performance of the Investor Class shares is used and includes expenses not applicable and lower than those of Investor Class shares. Performance data quoted represents past performance; past performance 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 of the fund may be lower of higher than the performance quoted and can be obtained here. Performance is annualized for periods greater than 1 year. Each Morningstar category average represents a universe of funds with similar objectives.
3 Year Risk Metrics
BUFTX vs Morningstar U.S. Mid Growth Index (As of 12/31/19)
Upside Capture84.08
Downside Capture93.71
Sharpe Ratio1.08
Hypothetical Growth of $10,000
This chart illustrates the performance of a hypothetical $10,000 investment made in the Fund on the Inception Date. Assumes reinvestment of dividends and capital gains. This chart does not imply future performance.


Portfolio Characteristics
(As of 12/31/19) 
# of Holdings90
Median Market Cap$15.52 B
Weighted Average Market Cap$19.44 B
3-Yr Annualized Turnover Ratio66.42%
% of Holdings with Free Cash Flow90.00%
Active Share64.39%
Top 10 Holdings
HoldingTickerSector% of Net
The Cooper Cos.COOHealth Care1.78%
NasdaqNDAQFinancial Services1.65%
IHS MarkitINFOIndustrials1.64%
Global PaymentsGPNIndustrials1.54%
Align TechnologyALGNHealth Care1.51%
Bio-TechneTECHHealth Care1.50%
MSCIMSCIFinancial Services1.50%
Vail ResortsMTNConsumer Discretionary1.44%
PRA Health SciencesPRAHHealth Care1.42%
As of 12/31/19. Top 10 Holdings for the quarter are not disclosed until 60 days after quarter end. Fund holdings are subject to change and are not recommendations to buy or sell any securities.
Sector Weighting
As of 12/31/19. Security weightings are subject to change and are not recommendations to buy or sell any securities. Sector Allocation may not equal 100% due to rounding.
Market Capitalization
As of 12/31/19. Market Cap percentages may not equal 100% due to rounding.


Clay Brethour, CFA
Portfolio Manager

27 Years of Experience

 View full bio

Dave Carlsen, CFA
Portfolio Manager

27 Years of Experience

 View full bio



(As of 12/31/19) — The combination of a U.S. Federal Reserve (Fed) interest rate cut, an improving economic outlook, and easing trade tensions, sent equity markets sharply higher in the 4th quarter. The S&P 500 Index advanced 9.10% during the period, which brought the full-year (2019) gain to 31.49%. The Fed cut interest rates three times in 2019, erasing the brief yield curve inversion and assuaging fears of a recession. The economy continued to add new jobs at a strong pace and unemployment declined to 3.5%. Consumer spending remained healthy, and there is optimism for better business investment following the announced “phase one” trade deal with China.

Similar to the S&P 500 Index, the broad-based Russell 3000 Index returned 9.04% during the quarter. Growth outperformed value, as the Russell 3000 Growth Index returned 10.62% compared to a return of 7.41% for the Russell 3000 Value Index. Smaller companies outperformed larger companies, as one would expect in a “risk-on” period. The Russell Microcap Index surged 13.45% and the Russell 2000 Index advanced 9.94%. Large company benchmarks such as the Russell 1000 Index advanced 9.04% while the Russell Midcap Index produced a return of 7.06%. Technology and Health Care were the best performing sectors in the quarter, while more defensive areas of the market lagged such as Real Estate and Utilities. Higher long-term interest rates weighed on high-quality bond proxies – the safe haven 10-year U.S. Treasury Bond produced a return of -1.74% during the quarter.


(As of 12/31/19) — The Buffalo Discovery Fund gained 4.36% during the quarter versus the Morningstar U.S. Mid Growth Index’s gain of 8.31%. While the Fund outperformed in Financials and Materials, relative weakness in Consumer, Health Care, Industrials, and Technology weighed on our result versus the benchmark. High-multiple, long-duration growth stocks continued to respond favorably to the Fed’s renewed reflationary stance.

Meanwhile, cyclical stocks like Energy companies perked up as trade headwinds dissipated and as the Fed signaled they may let the economy gain a head of steam before contemplating any interest rate increases. The Fund was positioned more conservatively, both cyclically and in terms of relative valuation, than the Index during a quarter that produced strong market returns. The Fund continues to invest in innovative growth companies with attractive valuations, through our internal analysis; a strategy we believe should be a key driver of above-index, risk-adjusted returns over the long term.


Align Technology, the leading supplier of clear aligners for dental malocclusion, continued to grow at robust rates while fending off new entrants in its market. We believe prosperous growth is sustainable over the intermediate-to-long-term as the company has expanded its products to address nearly 70% of the orthodontic market that continues to convert from metal braces to clear aligners.

Lumentum Holdings manufactures optical and photonic products for the communications networking, commercial laser, and consumer 3D sensing markets. Near-term, interest in the stock has improved with better global trade sentiment while long-term prospects are driven by the rapid proliferation of 3D sensing capabilities in handsets, automobiles, laptops, and tablets. 3D sensors enable face recognition authentication for mobile devices, detect hand and gesture movement, and provide people recognition capability for home systems, robotics navigation, and Advanced Driver-Assistance Systems (ADAS) for vehicles.


ServiceMaster Global Holdings is a market leader in the pest control industry, which is characterized by favorable secular trends and lucrative business models. During the period, ServiceMaster’s stock price was hit by an unexpectedly large spike in termite damage claims in the Mobile, Alabama region. The significant drop in the stock appears to be an over-reaction that discounts an expansion in claims beyond the region and a very dire outcome. Meanwhile, investors are taking a wait-and-see approach until the company can officially quantify the size of potential damage claims, which they expect to do by their 4th quarter 2019 earnings release date.

Expedia Group is a leading online travel network for hotel, air travel, rental car, and cruise vacation bookings. Its stock price fell after it missed and lowered guidance for profitability targets the company attributed to a shift to higher-cost marketing channels, after Alphabet (GOOG) changed its search optimization algorithm.


(As of 12/31/19) — Following strong stock market gains in 2019 driven by multiple expansion, we expect more modest equity market returns in 2020, driven primarily by corporate earnings growth. Despite hearty returns in 2019, we believe the market environment is still constructive for active growth stock investing. Interest rates, inflation, and unemployment remain relatively low by historical standards, while global central bankers have recently pledged additional stimulus measures to boost growth and inflation to keep the long-running economic expansion alive.

Historically-low unemployment conditions in the U.S. suggests to us that greater productivity improvements may be required to offset wage pressure, in order to attain the meaningful gross domestic product (GDP) and corporate earnings growth needed to sustain current valuation multiples. Meanwhile, easing global trade tensions with China and a Fed “on hold” should instill business confidence and catalyze the willingness to spend on these initiatives. Such a backdrop should be favorable to our focus on innovators and market disruptors who are more often than not productivity enablers.

Countering this healthy backdrop are high-growth stock valuations, growing equity market complacency, and market uncertainty related to the upcoming U.S. presidential election. There is also the potential for more on-again, off-again global trade friction with other major trading partners, namely Europe. Asymmetric risk abounds, but so do underappreciated opportunities.

We believe good stock picking over the long term requires the courage to be different. Whether it’s the courage to have a long term favorable view in the midst of short term disappointment or the courage to forecast long term growth that conventional wisdom doesn’t foresee, both provide opportunity to own attractive, underappreciated companies. Overall, this market environment could favor judicious growth stock investors, where a steady hand and active management, with an eye toward quality, improving-profit cycle dynamics, and attractive risk-adjusted returns could hold an advantage.

Economic conditions may ebb and flow, but our focus is steady; to invest in attractively-priced, financially-strong, well-managed companies that, in our opinion, could benefit from innovative strategies and disruptive megatrends.

The opinions expressed are those of the Portfolio Manager(s) and are subject to change, are not guaranteed and should not be considered recommendations to buy or sell any security. Investing in both actively and passively managed mutual funds involves risk and principal loss is possible. Earnings growth is not representative of the fund’s future performance.


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Retirement Information
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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.

The Morningstar Rating™ for funds, or "star rating", is calculated for managed products (including mutual funds, variable annuity and variable life subaccounts, exchange-traded funds, closed-end funds, and separate accounts) with at least a three-year history. Exchange-traded funds and open-ended mutual funds are considered a single population for comparative purposes. It is calculated based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a managed product's monthly excess performance, placing more emphasis on downward variations and rewarding consistent performance. The top 10% of products in each product category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars, and the bottom 10% receive 1 star. The Overall Morningstar Rating™ for a managed product is derived from a weighted average of the performance figures associated with its three-, five-, and 10-year (if applicable) Morningstar Rating™ metrics. The weights are: 100% three-year rating for 36-59 months of total returns, 60% five-year rating/40% three-year rating for 60-119 months of total returns, and 50% 10-year rating/30% five-year rating/20% three-year rating for 120 or more months of total returns. While the 10-year overall star rating formula seems to give the most weight to the 10-year period, the most recent three-year period actually has the greatest impact because it is included in all three rating periods.

The Buffalo Discovery Fund (BUFTX) received 3 stars among 568 for the 3-year, 3 stars among 498 for the 5-year, and 4 stars among 385 Mid-Cap Growth funds for the 10-year period ending 2/29/20.

In each Morningstar Category, the 10% of funds with the lowest measured risk are described as Low Risk, the next 22.5% Below Average, the middle 35% Average, the next 22.5% Above Average, and the top 10% High. Morningstar Risk is measured for up to three time periods (three, five, and 10 years). These separate measures are then weighted and averaged to produce an overall measure for the fund. Funds with less than three years of performance history are not rated. ©2020 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results. The Morningstar Style Box™ reveals a fund’s investment strategy by showing its investment style and market capitalization based on the fund’s portfolio holdings.