BUIOX — Buffalo Early Stage Growth Fund
Data updated: 2026-06-08
BUIOX — Buffalo Early Stage Growth Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Small Cap Growth Equity · $61.30M AUM · 1.36% expense ratio · 8.7% 1-yr return. From SEC regulatory filings.
BUIOX Fund Overview
BUIOX — 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: $61.30M
- 1-year return: 8.7%
- Ticker: BUIOX
- SEC CIK: 0001135300
- SEC series ID: S000006555
- Share class ID: C000214587
BUIOX 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 |
|---|---|
| OneSpaWorld Holdings Ltd | 2.73% |
| WisdomTree Inc | 2.58% |
| Guardian Pharmacy Services Inc | 2.56% |
| LeMaitre Vascular Inc | 2.25% |
| Cardinal Infrastructure Group | 2.19% |
| Transcat Inc | 2.17% |
| Patrick Industries Inc | 2.03% |
| Champion Homes Inc | 2.00% |
| TAT Technologies Ltd | 1.95% |
| American Superconductor Corp | 1.92% |
BUIOX 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 | 98.2% |
| Cash & Equivalents | 1.9% |
BUIOX Performance
Total returns for BUIOX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -5.1% |
| 1 year | 8.7% |
| 3 years (annualised) | 2.6% |
| 5 years (annualised) | -4.2% |
BUIOX Risk Information
Risk metrics for BUIOX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 14.8%
BUIOX Costs and Fees
BUIOX costs about $136 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.36%
- Gross expense ratio: 1.36%
- Portfolio turnover: 18%
- Brokerage commissions: 16.49 bps of average net assets (SEC N-CEN)
BUIOX Cashflows
Over the 12 months to 2026-03, Buffalo Early Stage Growth Fund had net outflows of $1.45M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$205.62K |
| 2026-02 | −$1.30M |
| 2026-01 | −$715.90K |
| 2025-12 | $2.10M |
| 2025-11 | −$697.39K |
| 2025-10 | −$538.57K |
BUIOX Debt Constituents
No individual debt constituents are reported in Buffalo Early Stage Growth Fund's latest SEC N-PORT filing.
BUIOX Prospectus and SEC Filings
Official Buffalo Early Stage Growth Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
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.