In the realm of small-cap investing, a notable divergence in performance has emerged between two prominent exchange-traded funds: the Avantis U.S. Small Cap Value ETF (AVUV) and the iShares Russell 2000 ETF (IWM). While IWM is a popular choice for broad small-cap exposure, AVUV has consistently delivered superior returns across various timeframes, demonstrating the efficacy of its selective investment strategy. This outperformance, observed year-to-date, over one year, and over a five-year period, underscores the potential benefits of a more discerning approach to small-cap allocations.
The iShares Russell 2000 ETF (IWM) provides investors with exposure to the entire Russell 2000 index, a strategy that prioritizes breadth over selectivity. This means IWM includes all companies within the index's size parameters, regardless of their financial health or profitability. Consequently, IWM's portfolio often comprises a mix of robust businesses alongside those with significant debt or an absence of earnings. This inclusive approach, while offering simplicity and low cost, inherently incorporates a drag from less stable entities. Conversely, the Avantis U.S. Small Cap Value ETF (AVUV) employs an active, systematic screening process. It begins with the same broad universe of small-cap companies but then filters them to favor those that are smaller, more affordably priced, and demonstrate higher profitability. This meticulous selection process leads to a more concentrated portfolio of approximately 795 stocks, distinguishing it significantly from IWM's broader holdings. As of September 30, 2026, AVUV's year-to-date return stood at 17.04%, compared to IWM's 13.37%. Over one year, AVUV returned 20.03% against IWM's 15.5%, and over five years, AVUV boasted an impressive 70.34% return, substantially outpacing IWM's 27.57%.
The core difference in performance can be attributed to AVUV's rigorous screening methodology. The Russell 2000 index, and by extension IWM, is weighted by market capitalization and does not incorporate criteria for profitability or valuation. This open-door policy means that any company meeting the size requirements is included, leading to a portfolio that carries the inherent risks associated with less financially sound small businesses. Small companies, by their nature, face higher failure rates than their larger counterparts, and an index that owns every constituent will naturally reflect this risk. AVUV's strategy, however, is designed to mitigate these risks by selectively investing in businesses with stronger financial fundamentals. By focusing on companies that are cheaper and more profitable, AVUV aims to provide investors with a portfolio that possesses a greater earnings cushion, particularly during challenging market conditions. This targeted approach has proven to be a significant advantage, particularly over longer investment horizons, as evidenced by the substantial difference in five-year returns between the two funds.
Despite its superior performance, AVUV does come with a slightly higher expense ratio. While IWM's expense ratio is 0.19%, AVUV's stands at 0.25%. This higher fee means AVUV must consistently outperform its benchmark by a sufficient margin to justify the additional cost. Although historical performance suggests it has successfully done so, there's no guarantee that this will continue indefinitely. Value-oriented strategies, particularly those focusing on small caps, can experience periods of underperformance, especially during market rallies dominated by rapidly growing, unprofitable small-cap stocks. Recent market movements illustrate that even a carefully screened fund like AVUV is not immune to broad market pressures. In September, both AVUV and IWM experienced similar declines, falling approximately 2.79% and 2.84% over a week, and 5.54% and 5.64% over a month, respectively. This demonstrates that when the entire small-cap asset class faces headwinds, a value and profitability screen offers limited protection against widespread sell-offs, and investors in AVUV should anticipate absorbing such broad market downturns.
For investors considering a shift from IWM to AVUV, tax implications are an important consideration, particularly in taxable accounts. Selling IWM shares at a gain would trigger capital gains taxes. A tax-efficient approach might involve directing new investments towards AVUV while retaining existing IWM holdings, or selectively selling IWM lots with minimal gains. In tax-advantaged accounts like IRAs or 401(k)s, such a transition would not incur immediate tax consequences, simplifying the decision to a purely strategic one. Ultimately, the choice between IWM and AVUV depends on an investor's individual goals and risk tolerance. Those seeking broad, low-cost exposure to the small-cap market without specific screening criteria may find IWM suitable. However, for investors who prioritize value and profitability filters and are willing to pay a slightly higher fee for potentially enhanced returns, AVUV presents a compelling alternative supported by a strong performance track record. Long-term investors who can withstand temporary periods of underperformance and believe in the enduring efficacy of value and profitability factors may find AVUV to be a valuable core small-cap holding. However, a sustained resurgence of growth-led small-cap leadership could alter this assessment.
