The fund tracks the Solactive developed markets ex-US large and mid cap index, holding nearly 1,000 global companies in proportion to their market capitalization. It serves as a core holding that diversifies a portfolio overly concentrated in the US market and shares in the growth of developed economies worldwide.

It is well suited to investors looking to expand their asset allocation into developed markets outside the US, as well as practical investors who want to maximize returns by minimizing the running costs of long-term holdings.

Launched by BNY Mellon in 2020, it is a passively managed ETF that tracks an index.

The fund uses a classic passive strategy, fully replicating the index constituents. It holds high-quality developed-market stocks evenly across sectors such as financials, industrials, and health care, which reduces reliance on any single stock or sector and closely tracks the average market return.

• One of the lowest management fee structures in the industry
• Comprehensive exposure to developed markets worldwide

Assets under management (AUM) stand at $1.3B, and the expense ratio is 0.04% per year.

The fund competes with large international ETFs such as IEFA and VEA shown in the table, and it has built its competitiveness by offering an even lower expense ratio than they do. Although its track record is relatively short, backed by BNY Mellon's management capabilities it is establishing itself as a practical alternative for cost-sensitive individual and institutional investors.

Returns have fluctuated with shifts in global interest rate policy and economic indicators in each country. Amid easing of Europe's energy crisis and the re-rating of Japanese equities, developed markets outside the US have come back into focus and have held up solidly.

Amid debate over the high valuations of US stocks, demand for relatively cheaper developed-market stocks abroad has grown, and inflows continue. In particular, its strength as an ultra-low-fee ETF has stood out, with notable inflows from long-term recurring investment money.

The fund offers broad exposure to developed markets at ultra-low cost, but investors should consider the risks posed by currency fluctuations and the economic conditions of specific countries.

VEA and IEFA, shown in the table, are long-established leaders with abundant liquidity, but BKIE has the edge on fees. For a wider scope, VT, which covers markets worldwide, or VXUS, which also includes emerging markets, could serve as alternatives. Charles Schwab's low-cost option SCHF and Vanguard's VEU are also quality products worth considering.

Here are the key points to check before investing in BKIE. Because it invests directly in overseas assets, it is important to understand costs, exchange rates, and the characteristics of the regions invested in.

There is concern that growth in developed markets outside the US may stagnate relative to the US. Also, because many holdings have high dividend payouts, investors should be aware that income may account for a larger share of returns than price appreciation.

It is an economical tool for investors looking to move beyond an all-US approach and turn toward developed markets worldwide. From a long-term asset allocation perspective, it is more than capable of serving as one pillar of a portfolio.