RMBBX — RMB Small Cap Fund
Data updated: 2026-03-16
RMBBX — RMB Small Cap Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Blend / Core Equity · $128.32M AUM · 0.96% expense ratio · -0.0% 1-yr return. From SEC regulatory filings.
RMBBX Fund Overview
RMBBX — RMB Small Cap Fund is a US mutual fund managed by Rmb Investors Trust, categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Rmb Investors Trust
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $128.32M
- 1-year return: -0.0%
- Ticker: RMBBX
- SEC CIK: 0000030126
- SEC series ID: S000065670
- Share class ID: C000212437
RMBBX Holdings
Top 10 holdings of RMB Small Cap Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Curtiss-Wright Corp | 4.42% |
| Stifel Financial Corp | 4.07% |
| Monolithic Power Systems Inc | 3.81% |
| TriCo Bancshares | 3.62% |
| First American Government Obli | 3.60% |
| EastGroup Properties Inc | 3.54% |
| Carpenter Technology Corp | 3.54% |
| Eagle Materials Inc | 3.12% |
| Stock Yards Bancorp Inc | 2.96% |
| Fair Isaac Corp | 2.94% |
RMBBX Portfolio Allocation
Asset-class allocation of RMB Small Cap Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 96.4% |
| Cash & Equivalents | 3.6% |
RMBBX Performance
Total returns for RMBBX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| 1 year | -0.0% |
| 3 years (annualised) | 10.9% |
| 5 years (annualised) | 5.0% |
RMBBX Risk Information
Risk metrics for RMBBX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 11.5%
RMBBX Costs and Fees
RMBBX costs about $96 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.96%
- Gross expense ratio: 1.14%
- Portfolio turnover: 14%
- Brokerage commissions: 2.05 bps of average net assets (SEC N-CEN)
RMBBX Cashflows
Over the 12 months to 2025-12, RMB Small Cap Fund had net outflows of $12.99M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2025-12 | $6.69M |
| 2025-11 | $842.67K |
| 2025-10 | $114.89K |
| 2025-09 | −$789.29K |
| 2025-08 | −$1.44M |
| 2025-07 | $2.47M |
RMBBX Debt Constituents
No individual debt constituents are reported in RMB Small Cap Fund's latest SEC N-PORT filing.
RMBBX Prospectus and SEC Filings
Official RMB Small Cap Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Mid Cap Blend / Core 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.