This ETF tracks the Bloomberg U.S. Long Corporate Bond Index and diversifies across long-maturity, investment-grade, US dollar-denominated corporate bonds. It holds long-term fixed-rate bonds from industrial, financial and utility issuers on a market-capitalization-weighted basis.

It suits investors who seek relatively high coupon income from long-term corporate bonds and are prepared to tolerate considerable interest rate volatility.

It is a passively managed (index-tracking) ETF run by Vanguard.

Rather than fully replicating the index, the fund uses a sampling approach, selecting securities that approximate the index's key risk factors and characteristics. It invests most of its assets in the long-term corporate bonds included in the index, so it tracks the performance of investment-grade corporate bonds broadly.

• Fees below the category average
• High interest rate sensitivity due to concentration in long maturities

Assets under management (AUM) stand at $8.5B, and the expense ratio is 0.03% per year.

Broad diversification and low fees are its hallmarks, and its long-maturity composition means prices tend to swing widely with the direction of interest rates.

Long-term corporate bond prices tend to move strongly with the direction of market interest rates, weakening when rates rise and strengthening when they fall. Coupon income accounts for a large share of total return.

Fund flows diverge depending on the interest rate outlook and changes in credit spreads, and demand for long-term bonds tends to grow when expectations of rate cuts take hold. Shifts in safe-haven preference also influence the trend.

Its strengths are low fees and the coupon income of long-term corporate bonds, while its weakness is high interest rate sensitivity.

SPLB, shown in the table, is a direct comparison in the same long-term corporate bond category, where the fee difference becomes the deciding factor, while IGBH is a variant that reduces interest rate sensitivity through a structure that hedges interest rate risk. To lower interest rate sensitivity by shortening maturity, you can consider intermediate-term corporate bond VCIT or short-term corporate bond VCSH, and for broad diversification across the bond market, total bond market fund BND is also worth a look.

Here are the points to review before investing in VCLT. As a long-term corporate bond ETF, its returns are strongly affected by interest rate sensitivity, credit and currency factors, so it is important to check these factors in advance in light of your holding purpose and period.

The high interest rate sensitivity that comes with long maturities is the main source of volatility. In a rising-rate environment, price declines can drag down total return despite the coupon income.

It is a suitable choice for investors who want to diversify across long-term investment-grade corporate bonds at a low fee. If interest rate sensitivity is a concern, consider VCIT or VCSH with shorter maturities, and if you want to hedge interest rate risk, it is advisable to consider IGBH as well.