BUFOX — Buffalo Early Stage Growth Fund
Data updated: 2026-08-21
BUFOX — Buffalo Early Stage Growth Fund. United States Small Cap Growth Equity · $75.48M AUM. Holdings, fees, performance and SEC filings.
BUFOX Fund Overview
BUFOX — Buffalo Early Stage Growth Fund is a US mutual fund managed by Buffalo Funds, categorised as United States Small Cap Growth Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Buffalo Funds
- Category: United States Small Cap Growth Equity
- Assets under management: $75.48M
- 1-year return: 29.9%
- Ticker: BUFOX
- SEC CIK: 0001135300
- SEC series ID: S000006555
- Share class ID: C000017894
BUFOX Holdings
Top 10 holdings of Buffalo Early Stage Growth Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Cardinal Infrastructure Group | 3.06% |
| Ouster Inc | 2.94% |
| Ambiq Micro Inc | 2.56% |
| OneSpaWorld Holdings Ltd | 2.42% |
| WisdomTree Inc | 2.36% |
| Guardian Pharmacy Services Inc | 2.23% |
| ACM Research Inc | 2.21% |
| Transcat Inc | 2.15% |
| HealthStream Inc | 1.95% |
| Impinj Inc | 1.87% |
BUFOX Portfolio Allocation
Asset-class allocation of Buffalo Early Stage Growth Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.7% |
| Cash & Equivalents | 0.4% |
BUFOX Performance
Total returns for BUFOX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 20.9% |
| 1 year | 29.9% |
| 3 years (annualised) | 8.9% |
| 5 years (annualised) | -1.0% |
BUFOX Risk Information
Risk metrics for BUFOX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 18.6%
BUFOX Costs and Fees
BUFOX costs about $148 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.48%
- Gross expense ratio: 1.48%
- Portfolio turnover: 48%
- Brokerage commissions: 16.49 bps of average net assets (SEC N-CEN)
BUFOX Cashflows
Over the 12 months to 2026-06, Buffalo Early Stage Growth Fund had net outflows of $1.77M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$897.09K |
| 2026-05 | −$854.11K |
| 2026-04 | −$563.32K |
| 2026-03 | −$205.62K |
| 2026-02 | −$1.30M |
| 2026-01 | −$715.90K |
BUFOX Debt Constituents
No individual debt constituents are reported in Buffalo Early Stage Growth Fund's latest SEC N-PORT filing.
BUFOX Prospectus and SEC Filings
Official Buffalo Early Stage Growth Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-07-27
- Prospectus (485BPOS) — filed 2025-07-25
- Prospectus (485BPOS) — filed 2024-07-26
- Portfolio holdings (N-PORT) — filed 2026-08-21
- Portfolio holdings (N-PORT) — filed 2026-05-22
- Portfolio holdings (N-PORT) — filed 2026-02-24
- Annual census (N-CEN) — filed 2026-06-08
- Annual census (N-CEN) — filed 2025-06-09
Related Funds
Other United States Small Cap Growth Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.