RMBMX — RMB SMID Cap Fund
Data updated: 2026-08-19
RMBMX — RMB SMID Cap Fund. United States Mid Cap Blend / Core Equity · $196.95M AUM · 0.80% expense ratio. Holdings, fees, performance and SEC filings.
RMBMX Fund Overview
RMBMX — RMB SMID 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: $196.95M
- 1-year return: 16.5%
- Ticker: RMBMX
- SEC CIK: 0000030126
- SEC series ID: S000065671
- Share class ID: C000212439
RMBMX Holdings
Top 10 holdings of RMB SMID Cap Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Curtiss-Wright Corp | 4.94% |
| Applied Industrial Technologie | 3.75% |
| EastGroup Properties Inc | 3.68% |
| Monolithic Power Systems Inc | 3.22% |
| MKS Inc | 3.21% |
| West Pharmaceutical Services I | 3.20% |
| Eagle Materials Inc | 3.18% |
| Stock Yards Bancorp Inc | 3.00% |
| Stifel Financial Corp | 2.85% |
| TriCo Bancshares | 2.75% |
RMBMX Portfolio Allocation
Asset-class allocation of RMB SMID Cap Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.0% |
| Cash & Equivalents | 1.0% |
RMBMX Performance
Total returns for RMBMX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 13.9% |
| 1 year | 16.5% |
| 3 years (annualised) | 12.1% |
| 5 years (annualised) | 5.8% |
RMBMX Risk Information
Risk metrics for RMBMX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 12.7%
RMBMX Costs and Fees
RMBMX costs about $80 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.80%
- Gross expense ratio: 1.09%
- Portfolio turnover: 12%
- Brokerage commissions: 1.39 bps of average net assets (SEC N-CEN)
RMBMX Cashflows
Over the 12 months to 2026-06, RMB SMID Cap Fund had net inflows of $53.63M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$3.63M |
| 2026-05 | −$2.05M |
| 2026-04 | $64.60M |
| 2026-03 | −$8.86M |
| 2026-02 | −$710.34K |
| 2026-01 | −$1.84M |
RMBMX Debt Constituents
No individual debt constituents are reported in RMB SMID Cap Fund's latest SEC N-PORT filing.
RMBMX Prospectus and SEC Filings
Official RMB SMID Cap Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-28
- Prospectus (485BPOS) — filed 2025-04-29
- Prospectus (485BPOS) — filed 2024-04-29
- Portfolio holdings (N-PORT) — filed 2026-08-19
- Portfolio holdings (N-PORT) — filed 2026-05-21
- Portfolio holdings (N-PORT) — filed 2026-02-27
- Annual census (N-CEN) — filed 2026-03-16
- Annual census (N-CEN) — filed 2025-03-17
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.