It tracks the FTSE World Government Bond Index and concentrates on investment-grade government bonds issued by developed-market governments outside the US. It holds sovereign bonds from a variety of countries around the world at market-cap weights, reflecting the performance of the global bond market.

It suits conservative investors who want to reduce their reliance on US interest rates and diversify across global currencies.

It is a passively managed (index-tracking) ETF launched by BlackRock in 2009.

It holds government bonds of major developed countries outside the US, denominated in their local currencies. It sets caps so that no single country's weight becomes excessive, maximizing diversification, and it does not hedge currency exposure, so changes in the value of each country's currency flow directly into performance.

• Broad exposure to government bonds of developed countries excluding the US
• Currency diversification through local currency bets

Assets under management (AUM) stand at $1.0B, and the expense ratio is 0.35% per year.

Whereas the similar GOVT focuses on US Treasuries, IGOV widens its view to global markets. Compared with the short-duration-focused SHV, its price volatility in response to interest rate changes is somewhat larger, but it offers broader diversification.

Returns are determined by global monetary policy stances and interest rate movements in major developed countries, and recent tightening policies in various countries have led to somewhat elevated volatility.

From a global asset allocation perspective, money tends to flow in when demand for safe assets rises, and investor interest tends to increase especially when expectations of a weaker dollar strengthen.

It lets investors achieve global bond diversification and currency diversification at the same time, but it is a product that carries exchange rate risk alongside those benefits.

In contrast to the EMB mentioned in the table, which takes on emerging market risk, IGOV focuses on the stability of developed-market government bonds. Its direct competitor is BWX, and if you want to eliminate exchange rate risk, you can consider the currency-hedged BNDX as an alternative. In addition, ISHG, which centers on short-term bonds, and WIP, which offers inflation protection, are also worth reviewing.

Before investing in IGOV, it is important to closely examine the global interest rate environment and the exchange rate outlook, because it has a strong currency investment character beyond that of a simple safe asset.

Because the product is unhedged, performance may be weak during periods of dollar strength. Investors should also note that when global interest rates rise together, downward pressure on bond prices can intensify.

It is a standard choice for investors looking to expand their portfolios into developed-market assets outside the US. A strategic approach that uses currency fluctuations as an investment opportunity can be effective.