Fund Evaluator:
Oberweis Micro-Cap (OBMCX)
Follow This Fund
Best Performing in Small Growth Over the Last Year
| 78.1% | Oberweis Micro-Cap (OBMCX) |
| 72.6% | Emerald Growth Investor (FFGRX) |
| 70.7% | FullerThaler Behavioral Sm-Cp Gr Inv (FTXNX) |
| 70.1% | Hood River New Opportunities Investor (HRNIX) |
| 61.1% | Carillon Chartwell Small Cap I (UMBHX) |
Fund Details
Oberweis Micro-Cap Overview
Oberweis Micro-Cap (OBMCX) is an actively managed U.S. Equity Small Growth fund. Oberweis launched the fund in 1995.
The investment seeks to maximize capital appreciation. The fund invests, under normal circumstances, at least 80% of its net assets in the securities of very small companies which, at the time of purchase, have a market capitalization within the range of companies represented in the Russell Micro-Cap Growth Index. It invests principally in the common stocks of companies that the fund's investment adviser believes have the potential for significant long-term growth in market value.
About Oberweis Micro-Cap (OBMCX)
There are 2 members of the management team with an average tenure of 17.92 years: James Oberweis (2001), Kenneth Farsalas (2015). Management tenure is more important for actively managed funds than passive index funds.
The fund has 2 primary benchmarks: S&P 500 (TR) (1970) index with a weighting of 100% and Russell Micro Cap Growth TR USD index with a weighting of 100%. Oberweis Micro-Cap has 79 securities in its portfolio. The top 10 holdings constitute 33.3% of the fund’s assets. The fund meets the SEC requirement of being classified as a diversified fund. The fund is not considered to have an ESG focus with its investment selection and management.
Oberweis Micro-Cap is part of the Equity global asset class and is within the U.S. Equity fund group. Oberweis Micro-Cap has 8.9% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 88.9%. There is 8.9% allocated to foreign stock, and 0.0% is allocated to preferred stocks. The bond allocation as a percentage of total assets is 0.0% (0.0% domestic bond, 0.0% foreign bond and 0.0% convertible bond). Oberweis Micro-Cap has 2.1% of the portfolio in cash.
Assets Under Management
The fund has $677 million in total assets, which is above the $454 million average for the Small Growth category. Normally, lower assets under management translates to higher average expense ratios, and greater total assets are desired. However, for some investment categories, such as small-cap investing, it may be difficult for the manager to fully employ the desired active strategy if assets grow too large or too quickly.
OBMCX Performance and Fees
The expense ratio measures how much of a fund’s assets are used for administrative expenses and operating expenses, including adviser fees and fees for the transfer agent and custodial services. The Oberweis Micro-Cap expense ratio is high compared to funds in the Small Growth category. Oberweis Micro-Cap has an expense ratio of 1.46%, which is 24% higher than its category average, making the fund expense ratio grade a F. While it is difficult to predict returns, it is known that high annual expense ratios reduce your rate of return, and excessive fees are difficult to overcome. Active management normally comes with higher expense ratios than passive index management. Certain investment categories such as small company and foreign also normally have higher expense ratios. It is best to compare fund expense ratios against the category averages for meaningful assessments.
High portfolio turnover can translate to higher expenses and lower aftertax returns. Oberweis Micro-Cap has a portfolio turnover rate of 41%, indicating that holds its assets around 0.0 years. By way of comparison, the average portfolio turnover is 76% for the Small Growth category.
Recently, in the month of June 2026, Oberweis Micro-Cap returned 11.1%, which earned it a grade of A, as the Small Growth category had an average return of 6.5%. The letter grades of A, B, C, D and F are based upon relative rankings within the investment category. A grade of A, for example, would indicate that the return is in the highest 20% for that time period compared to all funds in that category.
Oberweis Micro-Cap has a trailing yield of 0.00%, which is below the 0.07% category average. The fund normally distributes its income annually and its capital gains annually.
It’s natural to seek the best-performing investments, but you must consider the relationship between risk and return and the impact of costs and taxes on your realized returns.
Oberweis Micro-Cap Grades
Year to date, the fund has returned 55.8%, 33.7 percentage points better than the category, which translates into a grade of A. The fund has returned 78.1% over the past year (grade of A), 30.1% over the past three years (grade of A) and 20.8% per year over the past five years (grade of A) and 22.5% per year over the past 10 years (grade of A).
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OBMCX Trailing NAV Total Returns Data as of 6/30/26
| Last Month |
Last Quarter |
Ann'l. 1Yr |
Ann'l. 3Yr |
Ann'l. 5Yr |
Ann'l. 10Yr |
|
| OBMCX Return (NAV) | 11.1% | 37.3% | 78.1% | 30.1% | 20.8% | 22.5% |
| OBMCX Grade | A | A | A | A | A | A |
| +/- Category | 4.7% | 12.6% | 44.4% | 13.7% | 16.2% | 9.9% |
| Small Growth Avg | 6.5% | 24.7% | 33.7% | 16.4% | 4.6% | 12.5% |
| OBMCX Tax Cost Ratio | na | na | 0.3% | 0.3% | 1.4% | 1.4% |
OBMCX Annual NAV Total ReturnsData as of 6/30/26
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
| OBMCX Return (NAV) | 55.8% | 14.7% | 22.9% | 18.9% | -10.6% | 53.4% | 29.9% | 21.9% | -12.3% | 27.9% | 24.6% |
| OBMCX Grade | A | A | A | B | A | A | D | F | F | B | A |
| +/- Category | 33.7% | 6.7% | 7.4% | 2.1% | 17.3% | 42.9% | -11.9% | -7.9% | -8.2% | 3.8% | 14.4% |
| Small Growth Avg | 22.1% | 8.0% | 15.5% | 16.7% | -27.9% | 10.5% | 41.8% | 29.9% | -4.1% | 24.1% | 10.2% |
| Risk Measures | |
| Standard Deviation: | 24.7% |
| Total Risk Index: | 2.03 - High |
| Category Risk Index: | 1.24 - High |
| Category Risk Grade: | F (98% Rank) |
| Beta: | 1.45 |
| R-Squared: | 58% |
| Leveraged Fund: | No |
| Inverse Fund: | No |
| Portfolio Characteristics | |
| Equity Investment Style: | Small-Cap Growth |
| Bond Investment Style: | na |
| Yield: | 0.0% |
| Dividend Distribution: | Annually |
| Cap Gains Distribution: | Annually |
| Total Assets: | $1614 Mil |
| Fund Total Assets: | $ 678 Mil |
| Share Class Type: | No Load |
| Portfolio Turnover: | 41% |
Management Team
| Number of Managers: 2 | |||
| Longest Tenure: 24.7 years | |||
| Average Tenure: 17.9 years | |||
| Managers (Year): Oberweis James (2001), Farsalas Kenneth (2015) | |||
Portfolio Composition (as of 3/31/26)
| # of Holdings: | 79 |
| % in Top 10 Holdings: | 33.3% |
| Fund is Non-Diversified: | No |
| % in Foreign Issues: | 8.9% |
Portfolio Allocation |
|
| Domestic Stock: | 88.9% |
| Foreign Stock: | 8.9% |
| Preferred Stock: | 0.0% |
| Domestic Bond: | 0.0% |
| Foreign Bond: | 0.0% |
| Convertible Bond: | 0.0% |
| Other: | 0.1% |
| Cash: | 2.1% |
Purchase Information
| Fund Family: | Oberweis |
| Phone Number: | 800-323-6166 |
| Website: | www.oberweisfunds.com |
| Status: | Open |
| Inception Date: | December 29, 1995 |
| Min. Initial Purchase: | $1,000 |
| Min. Initial IRA Purchase: | $ 500 |
| True No-Load: | Yes |
| Front Load Maximum: | 0.00% |
| Deferred Charge Maximum: | 0.00% |
| Redemption Charge Maximum: | 0.00% |
| 12b-1 Fee: | 0.25% |
Expenses and Fees | |
| Expense Ratio (%): | 1.46% ( Rating : High ) |
| Category Average Expense Ratio (%): | 1.18% |
| Share Class: | Oberweis Micro-Cap |
| Min. Subsequent Purchase: | $ 100 |
| Min. Subsequent IRA Purchase: | $ 100 |
