State Street SPDR Portfolio Developed World ex-US ETF (SPDW)

SPDW (the State Street SPDR Portfolio Developed World ex-US ETF, listed on NASDAQ) holds large-cap stocks in every developed economy except the United States. The portfolio spans Europe, Japan, Australia, Canada, and other mature markets, giving investors a way to own international equities through a simple, passive fund. For anyone living or investing primarily in the US, SPDW is the natural vehicle for geographic diversification outside US borders.

What is in SPDW?

SPDW holds the constituents of the MSCI World ex-US IMI index, a cap-weighted index of large, mid, and small-cap stocks across all developed economies outside the United States. The fund holds thousands of stocks, so any single position is small. The largest weights are typically in Europe (especially the United Kingdom, Germany, and Switzerland), followed by Japan, and then Australia, Canada, and other developed markets. Within each country, SPDW owns a broad cross-section: multinational banks and energy majors sit alongside machinery companies, utilities, and consumer staples.

The expense ratio is very low, reflecting the fund’s passive structure and the fact that State Street operates at scale. Because SPDW simply tracks an index, there is no active manager deciding which stocks are attractive or timing entry and exit; the portfolio simply mirrors the index weights and rebalances periodically as company weights shift.

Why invest internationally?

US-based investors naturally default to US stocks because of familiarity, dollar-denominated returns, and the fact that many multinational companies (Google, Microsoft, Apple) do substantial business globally anyway. But the US equity market represents less than half of global developed-market capitalization. By holding only US stocks, an investor ignores major economies, industries, and currency exposures available elsewhere.

International diversification reduces concentration risk. If a sector or regulatory trend hits US stocks disproportionately, international holdings may cushion the blow. Japan’s financial sector behaves differently than America’s; European industrials face different inputs and regulations than US peers; Australian miners have exposure to China that US mining companies lack. SPDW gives access to all of that without requiring the investor to pick individual countries or stocks.

What about currency exposure?

SPDW is denominated in US dollars, meaning the fund translates foreign stock prices back to dollars at prevailing exchange rates. If the euro weakens against the dollar, the fund’s holdings lose value when converted to dollars, even if the euro-denominated stocks themselves rise. Conversely, if the euro strengthens, SPDW gets a boost from currency appreciation on top of stock price gains. This currency exposure is a double-edged sword: it provides diversification against dollar strength but also introduces volatility that a domestic US investor does not face.

For investors who prefer pure stock-price exposure without currency moves, currency-hedged versions of SPDW exist. But the unhedged version is simpler and slightly cheaper, and over very long periods, currency moves tend to average out.

How does SPDW compare to other international options?

SPDW is one of many developed-market ex-US index funds. The MSCI World ex-US index is one of several common benchmarks; others include the FTSE Developed ex-US and regional indices like EAFE (Europe, Australasia, Far East). Different funds track different indices, but the holdings largely overlap—most funds own the same major companies in each country.

The main distinction is breadth. SPDW uses the IMI (Investable Market Index), which includes smaller-cap stocks alongside the mega-caps. This makes SPDW more diverse and slightly more exposed to mid-sized companies than a fund tracking the MSCI World ex-US Standard index, which is larger-cap focused. For most investors, the difference is minor.

Risks specific to international investing

International stocks carry the same market risks as US stocks—companies can fail, industries can decline, valuations can crater. But they also carry additional risks. Many developed countries outside the US have smaller, less liquid stock markets, so buying or selling large positions can be harder. Political risk, regulation, and tax treatment vary by country and can change. Currency swings can be dramatic, especially for emerging-market currencies.

SPDW itself minimizes some of these risks by holding diversified developed markets and sticking to large, established companies with deep liquidity. But it does not eliminate them. Exposure to Japanese stocks carries Japan-specific risks; European holdings carry eurozone and Brexit-related risks; Australian stocks carry commodity and China-exposure risks. The fund is not a hedge against US risk but rather an additional set of risks taken on for diversification.

Who should hold SPDW?

SPDW is appropriate for investors seeking geographic diversification, whether as a percentage of a larger portfolio or as a core holding. Someone with 60% US stocks and 40% bonds might allocate some of the stock portion to international via SPDW. A global-focused investor might hold SPDW alongside a US total-market fund and emerging-market exposure. It is not appropriate for investors who want pure US exposure, nor for traders timing international markets.

How to research SPDW

Read State Street’s fact sheet and prospectus to confirm the index methodology and geographic breakdown. Look at the fund’s current country weights (the latest US and UK exposure, the Japan weight, etc.) and compare to your own geographic preferences. Study the long-term returns of developed international markets versus the US to understand whether international diversification has historically added value. Check the currency effects over rolling periods to understand how much currency moves have boosted or dragged returns. Finally, model out a long-term allocation—decide what percentage of your equity portfolio should be international—and size the position accordingly.