Seeking International Diversification? Is VT or IXUS a Better Core Holding for Long-Term Investors?

Vanguard Total World Stock ETF (NYSEMKT:VT) provides comprehensive exposure to both domestic and international markets, while iShares Core MSCI Total International Stock ETF (NASDAQ:IXUS) excludes U.S. equities to focus solely on non-U.S. opportunities.

Investors seeking broad equity diversification often choose between a single global fund or a combination of regional funds. While both of these products cover thousands of stocks across developed and emerging markets, the primary distinction is whether the portfolio includes or excludes the world's largest equity market: the United States. This choice fundamentally dictates how an investor constructs their overall asset allocation strategy.

Snapshot (cost & size)

Beta measures price volatility relative to the S&P 500; beta is calculated from monthly returns over the available fund history (up to five years). The 1-yr return represents total return over the trailing 12 months. Dividend yield is the trailing-12-month distribution yield.

Vanguard Total World Stock ETF is slightly more affordable with a 0.06% expense ratio compared to 0.07% for the iShares fund. However, the iShares fund provides a significantly higher payout for income-seeking investors.

Performance & risk comparison

What's inside

Vanguard Total World Stock ETF provides a comprehensive solution by mirroring the FTSE Global All Cap Index, which spans more than 10,000 holdings. Because it includes the U.S., the portfolio is heavily concentrated in technology at 30%, followed by financial services at 16% and industrials at 11%. Its largest positions include Nvidia at 4.5%, Apple at 4.08%, and Microsoft at 3.2%. It was launched in 2008. Vanguard Total World Stock ETF has paid $2.41 per share over the trailing 12 months, which on its recent ~$158.3 share price works out to a 1.5% yield.

iShares Core MSCI Total International Stock ETF is designed to complement a U.S.-only portfolio by capturing 4,583 companies strictly outside of domestic borders. Its allocation leans more toward value-oriented sectors, with financials at 23% and industrials at 14%, while technology still maintains a significant 19% share. Top holdings in the fund include Taiwan Semiconductor Manufacturing at 4.4%, Samsung Electronics at 1.8%, and ASML Holding at 1.5%. It was launched in 2012. iShares Core MSCI Total International Stock ETF has paid $2.80 per share over the trailing 12 months, which on its recent ~$93.9 share price works out to a 3% yield.

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Which looks like the better buy

Gaining exposure to international stocks via a global exchange-traded fund is a great way to diversify your stock portfolio. But VT and IXUS are very different funds, and the better choice between the two likely comes down to what you already own. If you're starting from nothing, an early entry into VT makes a lot of sense -- with one purchase, you'll own shares of more than 10,000 companies around the world, including the dominant U.S. technology names.

But if you already have some of those companies in your portfolio, either individually or via another broad index fund like one that tracks the S&P 500 it may be either unnecessary or detrimental to double up on that concentration with VT. IXUS gives you low-cost access to more than 4,500 companies outside the U.S., meaning you'll get instant diversification geographically, but also by industry, as IXUS also gives you significant exposure to the financials and industrials segments.

IXUS also offers about double the dividend payout of VT, which may be appealing to income investors. But it's also the reason that IXUS has performed in line with VT over the last few years. When measured on price appreciation alone -- that is, without dividends reinvested -- IXUS comes up short, delivering a 28.37% gain over the last five years compared to VT's 50.2% share price gain.

Sarah Sidlow has positions in Apple, Microsoft, Nvidia, and Vanguard International Equity Index Funds - Vanguard Total World Stock ETF. The Motley Fool has positions in and recommends ASML, Apple, Microsoft, Nvidia, and Taiwan Semiconductor Manufacturing. The Motley Fool has a disclosure policy.