Meet Our Investment Manager: Oberweis Asset Management

Firm With 35+ Years of Specialised Micro cap Expertise Now Advising The VAM US Micro and Small Cap Growth Funds

Why Oberweis

  • Specialised Research

    Established in 1989

    AuM of $4.5bn (as at December 2025)

    Dedicated micro cap focus since 1989

    Post-Earnings Announcement Drift (PEAD) Investment Philosophy

  • Risk Management

    Systematic downside protection

    Defined sell discipline

    Unique portfolio monitoring process ensuring only profitable companies form part of portfolio construction

    Use of MSCI Barra Portfolio Manager to mitigate risk

  • Institutional Infrastructure

    Highly disciplined and repeatable investment process

    Seasoned team with 80+ years cumulative small-cap investing experience

    Long-tenured professionals with the same team managing the strategy since 2015

    Independent, employee-owned firm

The Oberweis Investment Process

How Oberweis Identifies and Manages Micro Cap Growth Opportunities

Oberweis Asset Management’s investment process is grounded in a rigorous, time-tested approach to identifying micro cap companies at inflection points. The firm invests in businesses where earnings surprises signal a sustainable acceleration in fundamental performance – not temporary anomalies. Through proprietary, bottom-up stock-picking and deep fundamental research, the Oberweis team systematically identifies companies that the broader market is overlooking or undervaluing.

The Oberweis Investment Process
  • Foundation of philosophy: behavioural finance phenomenon called Post-Earnings Announcement Drift (PEAD) that provides a source of alpha
  • Investors systematically underreact to positive information contained in earnings reports
  • Stocks drift in the direction of earnings surprises and revisions
  • Oberweis capitalises on this market inefficiency by identifying these earnings inflections early and holding positions as the market gradually recognises the improving fundamentals

Investment Process Explained:

Performance You can Trust. Expertise You Can Count On

The VAM US Micro Cap Growth Fund has has an excellent track record in the competitive US micro cap sector as demonstrated below.

+700% Outperformance vs Index

Source: Lipper IM. Data as of 31st January 2026. Inception date of E share class is 7th March 2012. Past performance should not be taken as an indication or guarantee of future performance.

Top Decile Fund

1st
out of
117

UCITS funds on Lipper Global Equity US SM&MID Cap

Source: Lipper IM. Data as of 31st January 2026. Inception date of E share class is 7th March 2012. Past performance should not be taken as an indication or guarantee of future performance. Other share classes available. This ranking only relates to a particular share class and is not a reflection of the other share classes which can be lower.

Citywire Ranking

3-300x400
1-1-300x400

Source: Citywire as of 31st January 2026. Past performance should not be taken as an indication or guarantee of future performance. Other share classes available. This ranking only relates to a particular share class and is not a reflection of the other share classes which can be lower.

Why the VAM US Micro Cap Growth Fund Deserves a Place in Your Clients’ Portfolios

4 Pillars of Excellence

Dedicated Team

Stable and experienced team with significant personal capital invested in the underlying strategy

Disciplined Process

Maximising opportunities by letting winners run, ensuring the Fund captures the full lifecycle of growth

Robust Risk Management

At stock and portfolio level to mitigate downside risk in volatile micro-cap markets

Established Track Record

Consistent focus on achieving better returns per unit of risk compared to the index

The Fund Is Now Re-Opened: Here's What This Means for You

After a period of restricted capacity, we’re accepting new subscriptions for advisers seeking specialised US micro cap exposure with institutional-grade management.

  • Institutional expertise – Oberweis’s 35+ years of micro cap specialisation
  • Proven process – PEAD-based approach to identifying emerging growth
  • Risk-managed growth – Downside protection in a volatile asset class
  • Diversification benefit – Reduce concentration in mega cap technology
  • Professional infrastructure – Research depth and operational excellence

Contact Sales:

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IMPORTANT — PLEASE READ

Sources: VAM and Oberweis Asset Management.

FOR PROFESSIONAL INVESTORS ONLY.

The information on this page is provided for information purposes only and does not constitute investment, legal, tax or other advice or any recommendation to buy or sell any funds or stocks mentioned. Prospective investors should take appropriate professional advice before making any investment decision. The value of investments may go down as well as up and investors may not get back the amount invested. Past performance is not necessarily a guide to future returns.