RMBJX — RMB Fund
Data updated: 2026-08-19
RMBJX — RMB Fund. United States Large Cap Blend / Core Equity · $119.82M AUM · 1.98% expense ratio. Holdings, fees, performance and SEC filings.
RMBJX Fund Overview
RMBJX — RMB Fund is a US mutual fund managed by Rmb Investors Trust, categorised as United States Large 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 Large Cap Blend / Core Equity
- Assets under management: $119.82M
- 1-year return: 15.1%
- Ticker: RMBJX
- SEC CIK: 0000030126
- SEC series ID: S000002997
- Share class ID: C000008244
RMBJX Holdings
Top 10 holdings of RMB Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Alphabet Inc | 11.21% |
| Microsoft Corp | 8.23% |
| Amazon.com Inc | 6.56% |
| NVIDIA Corp | 6.19% |
| Apple Inc | 5.71% |
| Visa Inc | 3.71% |
| AMETEK Inc | 3.46% |
| TJX Cos Inc/The | 3.25% |
| Palo Alto Networks Inc | 3.24% |
| Eli Lilly & Co | 3.11% |
RMBJX Portfolio Allocation
Asset-class allocation of RMB Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.8% |
| Cash & Equivalents | 0.3% |
RMBJX Performance
Total returns for RMBJX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 5.6% |
| 1 year | 15.1% |
| 3 years (annualised) | 12.3% |
| 5 years (annualised) | 6.6% |
RMBJX Risk Information
Risk metrics for RMBJX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 15.2%
RMBJX Costs and Fees
RMBJX costs about $198 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.98%
- Gross expense ratio: 1.98%
- Portfolio turnover: 43%
- Brokerage commissions: 2.49 bps of average net assets (SEC N-CEN)
RMBJX Cashflows
Over the 12 months to 2026-06, RMB Fund had net outflows of $1.52M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$685.32K |
| 2026-05 | −$1.38M |
| 2026-04 | $33.55K |
| 2026-03 | −$128.54K |
| 2026-02 | −$571.68K |
| 2026-01 | $1.15M |
RMBJX Debt Constituents
No individual debt constituents are reported in RMB Fund's latest SEC N-PORT filing.
RMBJX Prospectus and SEC Filings
Official RMB 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 Large 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.