This is a passive ETF managed by Vanguard that tracks the Bloomberg Global Aggregate ex-USD Float Adjusted RIC Capped Index. It provides automatic, market-cap-weighted diversified exposure to investment-grade bonds from developed markets outside the US, such as Europe, Japan and the UK, with a USD hedge applied automatically.

It suits asset allocators who want to add global bond diversification to a portfolio concentrated in US bonds, as well as long-term investors who want global bond exposure with reduced currency volatility.

It is an ETF run by Vanguard using a passive (index-tracking) approach.

The fund uses a passive strategy that holds global investment-grade bonds outside the US on a market-cap-weighted basis. To reduce currency volatility, a USD hedge is applied automatically, and the portfolio is heavily weighted toward Europe, Japan and the UK, with diversified exposure to bonds across many currency areas.

• A global bond ETF with an automatic USD hedge
• An ultra-low-cost core global bond holding
• Stable cash flow through monthly distributions

Assets under management (AUM) stand at $84.7B, and the total expense ratio is 0.07% per year.

Among the funds shown in the table, IUSB is a broadly diversified US bond variant with no global exposure, while BINC, PYLD, JCPB and DFCF are actively managed variants with different exposure structures. On fees, BNDX and IUSB belong to the category of low-cost direct alternatives.

Its performance has been shaped largely by global interest rate moves and rate differentials between currencies. The USD hedge shields part of the currency volatility, but the structure means hedging costs are reflected in the distribution yield.

It belongs to the group of mega-sized global bond ETFs that continue to attract asset allocation money from investors looking to add global bond diversification to US-bond-heavy portfolios. Demand for global diversification and for currency hedging both contribute to the inflows.

The main strengths are the ultra-low expense ratio and the automatic USD hedge, while the reflection of hedging costs and exposure to global interest rate changes are drawbacks to consider in advance.

Among the funds shown in the table, IUSB is a broadly diversified US bond variant, while BINC, PYLD, JCPB and DFCF are actively managed variants with different exposure structures. You can also consider variants such as BND and AGG for US aggregate bond exposure, SGOV for short-term US exposure, TIP for inflation hedging and EMB for emerging market bonds.

Here are the points to review before investing in BNDX. Broad global bond diversification and the USD hedge are its strengths, but it is advisable to double-check hedging costs, global interest rate changes and the effect of inflation before buying, and to review your position size and asset allocation strategy at the same time.

Hedging costs, global interest rate changes and inflation are the main drivers of short-term volatility and real returns. Although the currency hedge reduces exchange rate volatility, it is also worth considering that hedging costs affect distributions.

As a broadly diversified core holding in global bonds outside the US, it is regarded as a standard choice. If you need a US bond core, BND and AGG are suitable variants; for ultra-short-term exposure, SGOV; for emerging market bonds, EMB; and for an inflation hedge, TIP.