BUFTX Performance — Buffalo Mid Cap Discovery Fund, Investor Class
Data updated: 2026-08-21
BUFTX returned −0.64% year to date and −5.90% over one year to Jun 2026. Annualised returns are +3.50% over 3 years and −1.19% over 5 years. The fund trailed its US Mid-Cap Growth category average: $100 invested three years ago grew to $111, against $152 for the category, and to $94 over one year, against $118. Volatility over the past three years was 16.75% a year. In the 12 months to Jun 2026 the fund lost a net $142.2M, and assets reached $327.95M.
BUFTX Growth of $100
What $100 invested in Buffalo Mid Cap Discovery Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Growth category average over the same months.
| Period | BUFTX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $94 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $111 | $152 |
| 5 years (Jul 2021 – Jun 2026) | $94 | $129 |
| Since data start (Jul 2019 – Jun 2026) | $142 | $203 |
BUFTX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | −0.64% |
| 1 year | −5.90% |
| 3 years (annualised) | +3.50% |
| 5 years (annualised) | −1.19% |
BUFTX Annual Returns
Calendar-year total returns of Buffalo Mid Cap Discovery Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | −0.64% |
| 2025 | −1.81% |
| 2024 | +5.43% |
| 2023 | +24.30% |
| 2022 | −28.67% |
| 2021 | +11.93% |
| 2020 | +33.81% |
| 2019 (Jul–Dec) | +3.59% |
BUFTX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | −1.0% | −1.2% | −8.8% | +6.4% | +2.1% | +2.5% | — | — | — | — | — | — |
| 2025 | +6.5% | −5.5% | −6.5% | −0.4% | +6.7% | +3.8% | +0.5% | −1.1% | −1.6% | −0.1% | −1.1% | −2.0% |
| 2024 | −1.3% | +5.5% | +2.1% | −7.6% | +0.7% | +1.4% | +2.4% | +2.1% | +1.1% | −1.7% | +7.2% | −5.7% |
| 2023 | +10.2% | −1.5% | +1.7% | −2.9% | +0.5% | +7.1% | +2.0% | −2.3% | −5.9% | −6.1% | +12.5% | +8.8% |
| 2022 | −12.1% | −2.6% | +2.3% | −11.2% | −2.9% | −8.8% | +12.1% | −4.5% | −8.8% | +7.2% | +4.4% | −5.2% |
| 2021 | +1.1% | +2.4% | −0.8% | +4.1% | −2.5% | +4.0% | +1.9% | +1.1% | −3.6% | +6.0% | −6.6% | +5.0% |
| 2020 | +1.2% | −6.4% | −13.5% | +13.4% | +9.2% | 0.0% | +5.9% | +3.3% | +0.7% | −1.8% | +12.4% | +8.3% |
| 2019 | — | — | — | — | — | — | +2.0% | −1.5% | −1.2% | −0.2% | +4.0% | +0.5% |
BUFTX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 16.75%
- 3-year Sharpe ratio: -0.06 (vs 4.5% risk-free rate)
- Best month: +12.50% (Nov 2023)
- Worst month: −8.76% (Mar 2026)
BUFTX Fund Flows
Monthly money in and out of Buffalo Mid Cap Discovery Fund, from SEC Form N-PORT.
- 12-month net flow: −$142.2M
- 12-month gross sales (incl. reinvestments): $99.4M
- Sales ÷ redemptions: 0.41×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $1.3M | $15.9M | −$14.6M |
| May 2026 | $1.4M | $14.6M | −$13.2M |
| Apr 2026 | $1.3M | $19.4M | −$18.1M |
| Mar 2026 | $1.2M | $17.9M | −$16.7M |
| Feb 2026 | $920K | $24.6M | −$23.6M |
| Jan 2026 | $2.0M | $18.8M | −$16.8M |
| Dec 2025 | $83.8M | $39.6M | $44.2M |
| Nov 2025 | $1.2M | $25.8M | −$24.5M |
| Oct 2025 | $2.4M | $19.9M | −$17.4M |
| Sep 2025 | $1.0M | $13.6M | −$12.5M |
| Aug 2025 | $1.1M | $17.6M | −$16.5M |
| Jul 2025 | $1.6M | $14.1M | −$12.5M |
BUFTX Assets Under Management
Net assets of Buffalo Mid Cap Discovery Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $327.95M |
| 2026-03-31 | $338.00M |
| 2025-12-31 | $437.16M |
| 2025-09-30 | $532.48M |
| 2025-06-30 | $586.37M |
| 2025-03-31 | $572.83M |
| 2024-12-31 | $661.71M |
| 2024-09-30 | $730.06M |
| 2024-06-30 | $736.69M |
| 2024-03-31 | $835.33M |
| 2023-12-31 | $852.11M |
| 2023-09-30 | $793.56M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.