TLT vs XTWY

TLTBiShares 20+ Year Treasury Bond ETF

XTWYBBondBloxx Bloomberg Twenty Year Target Duration US Treasury ETF

In short

TLT The long bond's most famous ticker. iShares launched TLT in 2002, and it became the default way to take a view on 20-year-plus Treasuries: index-tracked, heavily traded, with a deep listed options market.

XTWY Most long Treasury funds sort bonds by maturity and let duration drift. XTWY aims at a constant 20-year duration, rebalanced monthly, so the interest-rate dial stays where you set it.

Stated mandate

TLT The fund seeks to track an index of U.S. Treasury bonds with remaining maturities greater than twenty years, providing targeted exposure to long-duration government debt.

XTWY The fund seeks to track an index of U.S. Treasury securities whose duration ranges from 18 to 22 years.

Why people hold it

• TLT Pure long-duration Treasuries: it tracks the ICE U.S. Treasury 20+ Year Bond Index, government debt maturing in 20 years or more, no corporate credit, no short-end dilution.ishares.com
• One of the most actively traded bond ETFs, with a deep listed options market around it, so positions and hedges can be built and unwound on-screen.marketchameleon.com
• Running since 2002 and now a multi-billion-dollar fund, paying distributions monthly.

• XTWY The index straddles a 20-year duration target and the portfolio rebalances monthly, so rate sensitivity is held near a set level instead of sliding as bonds age.sec.govbondbloxxetf.com
• At 0.13% a year it undercuts the typical long-Treasury fund in its group, and it pays monthly.
• Toolkit piece, not a one-off: the long end of a target-duration Treasury lineup that steps from six months out to twenty years.bondbloxxetf.com
• Nothing exotic under the hood: US Treasury notes, bonds and principal-only STRIPS in a standard 1940-Act ETF, live since 2022.sec.gov

Worth knowing

• TLT You pay for that liquidity: 0.15% a year, while BBLB tracks the very same index for 0.04% and VGLT charges 0.03% for long Treasuries.
• Long duration cuts both ways. Bonds this far out the curve move sharply when long-term yields shift, so the ride is far more volatile than a short-term Treasury fund.ishares.com
• Concentrated by design: roughly 50 Treasury bonds clustered at the long end, and the monthly payout floats with the coupons of whatever the index holds.

• XTWY Twenty years of duration cuts both ways. Price swings when yields move are large by design, and pinning duration means that sensitivity does not fade over time.sec.gov
• Cheap for the group, not the cheapest: VGLT (0.03%) and BBLB (0.04%) charge a fraction of it for maturity-bucket long Treasury exposure.
• A smaller, moderately traded fund next to giants like TLT, so trading costs deserve a look before sizing a position.

Full TLT profile⁠

Full XTWY profile⁠