International ETFs: A Historical Lens on the 2025-2026 Rotation

The recent outperformance of international stocks is a powerful reversal of a long-standing trend. For a full decade, global equities outside the United States were left behind. The scale of that underperformance is stark: a major world equities benchmark ETF, the iShares MSCI ACWI ETF, lagged the U.S. market by about 60% over the past ten years. This persistent gap shaped investor behavior, with capital flowing overwhelmingly into U.S. mega-cap technology stocks and creating a structural underweight in international markets for many American portfolios.

Even after the strong gains of 2025, a significant valuation disconnect remains. While international stocks have rallied, they still trade at a discount. Based on forward P/E ratios, non-U.S. stocks were about 35% cheaper than their U.S. counterparts, highlighting the deep value that had built up over the decade of underperformance.

The rotation that began in late 2024 and accelerated through 2025 was driven by several converging forces. A key catalyst was a weakening dollar, down by almost 9% for 2025, which boosted the dollar value of foreign-currency investments. At the same time, concerns over extreme U.S. market concentration and geopolitical dynamics, including President Donald Trump's trade policies, prompted a search for diversification. This combination of a falling dollar, valuation appeal, and strategic rebalancing has created a setup where the decade-long underperformance is being actively unwound.

Comparing the Core Vehicles: VXUS vs. IXUS

For investors seeking to capture the current rotation, the two largest international ETFs-Vanguard's VXUS and BlackRock's IXUS-present a near-identical performance picture. As of early February 2026, both funds delivered one-year returns of about 31.7%, a testament to their shared mandate of tracking global markets outside the U.S. This convergence in returns, however, masks subtle but meaningful differences in cost, risk, and scale that could influence a strategic choice.

The most straightforward advantage lies in fees. VXUS carries a lower expense ratio of 0.05% compared to IXUS's 0.07%. While the gap is narrow, it represents a persistent drag on long-term wealth accumulation. More materially, the funds differ in their risk profile. VXUS exhibits higher volatility, with a beta of 1.00 relative to the S&P 500, compared to IXUS's 0.76. This suggests VXUS's price swings are more closely aligned with the broader U.S. market, potentially amplifying both gains and losses during periods of turbulence. For a rotation that has been driven by a weakening dollar and cyclical re-rating, this higher sensitivity could be a double-edged sword.

The disparity in size is the most striking structural difference. VXUS commands a dominant asset base of $133.1 billion, more than double the $54.4 billion under management for IXUS. This scale offers VXUS a liquidity and cost advantage in trading, and its sheer size can influence market dynamics. It also reflects a deeper investor base that has been accumulating international exposure over a longer period.

In essence, the choice between them is a trade-off between concentration and breadth. Both track similar MSCI indices, but VXUS holds roughly twice as many securities, offering a more granular spread across global markets. For an investor betting on the continuation of the rotation, the lower cost and broader diversification of VXUS may provide a slight edge. Yet for a portfolio already holding a large-cap tilt, the slightly lower volatility of IXUS could offer a smoother ride. The near-identical returns underscore that in a strong, synchronized rally, the structural differences matter less than the shared exposure to the global rebound.

Strategic Options: Broad vs. Focused Approaches

For investors, the rotation opens a menu of choices beyond the broad-market funds. The total world index fund, the iShares MSCI ACWI ETF, offers a pure-play on the global rebound. Over the past year, it has gained 19.59%, with its price swinging between a 52-week low of 101.25 and a high of 147.39. This performance, while solid, trails the ~31% returns of the more focused VXUS and IXUS. Its wide range highlights the volatility inherent in a fund that captures every market swing, from developed to emerging. For a buy-and-hold investor, ACWI provides the ultimate diversification, but it may lack the targeted punch of a rotation play.

A more selective path is to focus on income. Dividend-focused ETFs like the Schwab International Dividend Equity ETF (SCHY) and the Vanguard International Dividend Appreciation ETF (VIGI) target high-quality, established companies. Both charge ultra-low fees of just 8 to 10 basis points annually. SCHY tracks a dividend 100 index, limiting sector and stock concentration, while VIGI focuses on firms with a history of increasing payouts. These funds are built for stability, aiming to deliver a steady yield-over 3% for SCHY-while participating in the global recovery. They represent a defensive, income-oriented alternative to chasing pure growth.

Then there is the high-stakes, high-reward option. Some country-specific ETFs have delivered extreme returns, showcasing both the power and peril of concentrated bets. The iShares MSCI Brazil ETF (EWZ), for instance, is up almost 49% over the past year. This performance is a stark outlier, driven by Brazil's unique economic cycle and policy shifts. It illustrates the potential for outsized gains when a single market leads a global rally. Yet it also underscores the concentration risk: a fund like EWZ offers no diversification benefit and is vulnerable to domestic political or economic shocks. For the rotation, such funds are speculative wagers, not core holdings.

The bottom line is that the strategic choice depends on the investor's goal. Broad funds like VXUS or ACWI capture the macro trend with maximum diversification. Dividend ETFs like SCHY and VIGI provide a steady income stream with lower fees. Selective country plays like EWZ offer a chance at spectacular returns but come with significant volatility and concentration risk. In a rotation that has been broad-based, the most resilient approach may be a blend of the first two, using the third only as a tactical, small-position bet.

Drivers and Diversification: Beyond the Index

The rotation's durability hinges on whether its underlying drivers are structural or cyclical. Historical patterns suggest that true, lasting diversification benefits often emerge from fundamental shifts in global growth engines, not just currency moves. Three key themes are now supporting the rebound: Japan's corporate restructuring, Europe's infrastructure and defense spending, and commodity-driven growth in emerging markets. These are not fleeting trends but policy-backed transformations that could sustain international outperformance.

Japan's shift is a prime example. After decades of stagnation, corporate governance reforms and a renewed focus on shareholder returns are unlocking value. This structural change, combined with a weaker yen, has made Japanese equities a major contributor to the global rally. Similarly, Europe's massive spending on infrastructure and defense, spurred by geopolitical uncertainty, provides a tangible growth tailwind for its industrial and technology sectors. Meanwhile, emerging markets are benefiting from a global commodities cycle, with countries rich in resources seeing capital flow back into their economies. These are the kinds of multi-year themes that can turn a cyclical rotation into a secular trend.

The historical rationale for international diversification is clear. During periods of U.S. market stress, global markets often move differently. When the U.S. faces a domestic recession or a tech-led correction, international stocks-especially those in commodity exporters or regions with different economic cycles-can provide a buffer. This "flight to diversification" is what many investors are now seeking after a decade of concentrated U.S. exposure. The recent rotation is, in part, a rebalancing toward this natural hedge.

Yet the persistent risk remains: international markets are more volatile. The data shows a 5-year maximum drawdown of -30% for the broader category, a level of pain that can test investor resolve. This higher volatility is a trade-off for the potential rewards. It underscores that while the rotation has momentum, it is not a smooth ride. The historical pattern is that international stocks can outperform over long horizons, but they do so with steeper declines along the way.

Viewed through this lens, the current setup is a classic "catch-up" scenario. The decade of underperformance created a deep value gap and a structural underweight in U.S. portfolios. The rotation is a rational correction of that imbalance, powered by real global growth themes. For investors, the key is to separate the durable drivers from the cyclical noise. The volatility risk is real, but it is the cost of admission for accessing a more balanced, less concentrated global economy.

Catalysts and Risks: What to Watch

The rotation's next phase will be determined by a few critical factors. The immediate catalyst is policy. The recent rally was fueled by a weakening dollar, down by almost 9% for 2025, which itself was driven by concerns over President Donald Trump's trade policies. For the rotation to continue, this policy shift must be sustained. A reversal-such as a pivot toward more aggressive U.S. protectionism or a fiscal policy that strengthens the dollar-could quickly undermine the currency tailwind and reverse the flow of capital. As noted, the rotation began as a response to these very concerns, making them the most potent near-term risk.

Valuation provides a more nuanced check. While international stocks remain about 35% cheaper on forward P/E than U.S. peers, the question is whether that discount is still justified. The improved growth outlook from themes like Japan's corporate restructuring and Europe's defense spending suggests the discount may be narrowing. The key will be whether earnings growth in these markets can catch up to, or exceed, the improved sentiment. If valuations compress further without a corresponding earnings boost, the rally could stall. The historical pattern shows that international stocks often trade at a discount, but the size of that discount is what matters for future returns.

The core risk, however, is that this is a cyclical reversion to the mean rather than a secular shift. The decade of underperformance created a deep structural underweight in U.S. portfolios, which the rotation is now correcting. This dynamic can create a powerful, self-reinforcing momentum. Yet history shows such corrections can be volatile. The rotation's strength is built on a decade of lagging returns, and a pullback would not be a simple return to the old norm but a sharp repricing of expectations. The higher volatility of international markets, with a 5-year maximum drawdown of -30%, is a reminder of the turbulence that can accompany such a reversal. For the thesis to hold, the rotation must be validated by durable, policy-backed growth in global markets, not just a one-time catch-up.