RMBBX Performance — RMB Small Cap Fund, Class I
Data updated: 2026-03-16
RMBBX returned −0.02% over one year to Dec 2025. Annualised returns are +10.90% over 3 years and +4.99% over 5 years. The fund trailed its US Small Blend category average: $100 invested three years ago grew to $136, against $139 for the category, and to $100 over one year, against $109. Volatility over the past three years was 18.27% a year. In the 12 months to Dec 2025 the fund lost a net $13.0M, and assets reached $128.32M.
RMBBX Growth of $100
What $100 invested in RMB Small Cap Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Small Blend category average over the same months.
| Period | RMBBX | Category average |
|---|---|---|
| 1 year (Jan 2025 – Dec 2025) | $100 | $109 |
| 3 years (Jan 2023 – Dec 2025) | $136 | $139 |
| 5 years (Jan 2021 – Dec 2025) | $128 | $140 |
| Since data start (Jan 2020 – Dec 2025) | $150 | $164 |
RMBBX Trailing Returns
Total returns to Dec 2025, from SEC N-PORT.
| Period | Total return |
|---|---|
| 1 year | −0.02% |
| 3 years (annualised) | +10.90% |
| 5 years (annualised) | +4.99% |
RMBBX Annual Returns
Calendar-year total returns of RMB Small Cap Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2025 | −0.02% |
| 2024 | +15.07% |
| 2023 | +18.54% |
| 2022 | −24.79% |
| 2021 | +24.39% |
| 2020 | +17.58% |
RMBBX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | +3.7% | −5.3% | −6.1% | −1.4% | +3.7% | +3.3% | −0.2% | +2.3% | +0.2% | +0.9% | +2.1% | −2.5% |
| 2024 | −2.3% | +5.5% | +2.9% | −5.6% | +3.9% | −0.5% | +10.0% | −0.1% | +2.5% | −1.7% | +9.9% | −8.6% |
| 2023 | +10.8% | −1.1% | −3.0% | −3.3% | −1.8% | +8.5% | +3.6% | −1.3% | −6.3% | −6.8% | +10.8% | +9.2% |
| 2022 | −10.0% | −1.0% | −1.4% | −9.5% | +2.4% | −7.4% | +11.5% | −5.1% | −9.8% | +9.3% | +2.2% | −6.3% |
| 2021 | +1.2% | +7.6% | +0.8% | +5.0% | −1.1% | +1.7% | +1.3% | +3.8% | −3.9% | +5.3% | −2.5% | +3.4% |
| 2020 | −1.5% | −8.4% | −18.9% | +12.0% | +5.4% | +2.5% | +4.8% | +2.6% | −4.2% | +4.7% | +14.2% | +7.9% |
RMBBX Risk
Risk measures from monthly returns over Jan 2023 – Dec 2025.
- 3-year volatility (annualised): 18.27%
- 3-year Sharpe ratio: 0.35 (vs 4.5% risk-free rate)
- Best month: +10.83% (Jan 2023)
- Worst month: −8.57% (Dec 2024)
RMBBX Fund Flows
Monthly money in and out of RMB Small Cap Fund, from SEC Form N-PORT.
- 12-month net flow: −$13.0M
- 12-month gross sales (incl. reinvestments): $36.7M
- Sales ÷ redemptions: 0.74×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Dec 2025 | $9.1M | $2.4M | $6.7M |
| Nov 2025 | $2.1M | $1.2M | $843K |
| Oct 2025 | $2.2M | $2.1M | $115K |
| Sep 2025 | $1.7M | $2.5M | −$789K |
| Aug 2025 | $2.3M | $3.7M | −$1.4M |
| Jul 2025 | $3.5M | $1.1M | $2.5M |
| Jun 2025 | $1.4M | $2.2M | −$777K |
| May 2025 | $3.6M | $1.8M | $1.8M |
| Apr 2025 | $2.5M | $15.0M | −$12.5M |
| Mar 2025 | $3.7M | $4.6M | −$884K |
| Feb 2025 | $3.7M | $2.7M | $971K |
| Jan 2025 | $773K | $10.3M | −$9.5M |
RMBBX Assets Under Management
Net assets of RMB Small Cap Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2025-12-31 | $128.32M |
| 2025-09-30 | $127.44M |
| 2025-06-30 | $124.32M |
| 2025-03-31 | $129.59M |
| 2024-12-31 | $149.79M |
| 2024-09-30 | $155.05M |
| 2024-06-30 | $137.47M |
| 2024-03-31 | $143.65M |
| 2023-12-31 | $113.54M |
| 2023-09-30 | $103.80M |
| 2023-06-30 | $96.84M |
| 2023-03-31 | $94.78M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.