The fund tracks the Bloomberg US Treasury 20 Year Duration index and holds long-term US Treasuries and principal STRIPS bonds, with average duration set at about 20 years. Unlike typical maturity-bucket bond ETFs, it fixes duration at a specific target.

It suits bond investors who want to bet on a falling-rate environment or precisely adjust their portfolio's duration toward the long end.

This is a passively managed (index-tracking) ETF run by BondBloxx.

The fund combines long-term US Treasuries and principal STRIPS bonds so that average duration converges on about 20 years. Because holdings are selected based on a duration target rather than a maturity bucket, it is a non-diversified structure designed to keep interest rate sensitivity consistent.

• Duration fixed at a target of about 20 years
• Use of principal STRIPS to achieve duration efficiently

Assets under management (AUM) are $247.6M, and the total expense ratio is 0.13% per year.

Compared with TLT, a similar long-term Treasury ETF, it differs in using a duration-target approach, and its fees and liquidity should be evaluated against others in the category.

As with long-term Treasury ETFs generally, its price has shown large swings depending on the direction of interest rates. It tends to weaken clearly when rates rise and strengthen when they fall, and short-term fluctuations are fairly wide.

The direction of fund flows tends to split depending on the market's outlook for the rate cycle. When expectations of rate cuts build, inflows into long-term Treasuries are sometimes observed.

Its strengths are precise duration adjustment and its usefulness as a tool for betting on rates, while its weakness is the volatility that comes with high interest rate sensitivity.

The most representative direct substitute with exposure to the same long-term US Treasuries is TLT. You can also consider EDV, which holds zero-coupon long-term Treasuries with even longer duration, and VGLT and SPTL, which are low-cost long-term Treasury ETFs. These funds select holdings by maturity bucket, so their design differs from the duration-target approach, and it is appropriate to compare them on duration precision, fees, and liquidity. Meanwhile, GOVT, which appears in the table, holds US Treasuries across the full maturity range and therefore has shorter duration, while SHV and GBIL focus on ultra-short-term Treasuries and have very low interest rate sensitivity, so the choice depends on whether you want long-duration exposure or a short-term safe asset.

Here are the points to review before investing in XTWY. Because long-term Treasury ETFs are highly sensitive to interest rates, it is advisable to thoroughly check duration, the rate outlook, volatility, fees, and currency effects before deciding on position size.

Rising interest rates put direct downward pressure on long-term Treasury prices, and the longer the duration, the greater the effect. If the rate outlook proves wrong, short-term losses can be large.

It is a suitable tool for bond investors who want to manage long-duration exposure precisely. If the goal is simply long-term Treasury exposure, it is advisable to compare fees and liquidity against alternatives such as TLT and VGLT before choosing.