TDTT vs VTIP

TDTTBNorthern Trust iBoxx 3-Year Target Duration TIPS ETF

VTIPAVanguard Short-Term Inflation-Protected Securities ETF

In short

TDTT TIPS duration wanders as inflation expectations shift. TDTT's index pins it, targeting a modified adjusted duration of 3.0 years and rebalancing monthly: inflation-linked Treasuries on a short leash.

VTIP Inflation protection without the long-bond whiplash. VTIP holds only Treasury TIPS maturing inside five years, so CPI does most of the driving and rate swings do less of it, for three basis points a year.

Stated mandate

TDTT The Fund seeks to track, before fees and expenses, the price and yield performance of the iBoxx 3-Year Target Duration TIPS Index. It uses a passive indexing approach, generally replicating the index or using representative sampling when full replication is impracticable.

VTIP Tracks a benchmark measuring the investment return of U.S. Treasury inflation-protected public obligations with remaining maturities under five years.

Why people hold it

• TDTT The index targets a modified adjusted duration of 3.0 years, resets when it strays past a 5% band, and rebalances monthly. Duration is the design, not a byproduct.flexshares.comflexshares.com 2
• Built from TIPS with one to ten years to maturity and at least $2 billion outstanding, so the sleeve leans on the biggest, most tradable issues.flexshares.comflexshares.com 2
• Listed in 2011 and now a multibillion-dollar fund from Northern Trust, long past the stage where a niche bond ETF is fighting for scale.

• VTIP Three basis points a year, against a 0.12% median for Treasury bond ETFs in its group. Vanguard's at-cost setup shows up right in the fee line.vanguard.com
• TIPS principal ratchets with CPI, and the under-five-year maturity cap keeps duration short, so rate moves land lighter here than in full-curve TIPS funds like SCHP.vanguard.com
• Open since 2012 and now a multi-billion-dollar, actively traded fund that owns Treasury paper directly. Plain index rules, no swaps, no credit detours.

Worth knowing

• TDTT 0.18% net of a waiver through March 1, 2027 (0.19% gross), above the category median. Plain market-cap TIPS funds like SCHP and VTIP charge 0.03%.
• Pinning duration near three years is a middle setting: it moves less with rates than long TIPS, more than cash-like short TIPS.flexshares.com
• TIPS coupons move with CPI adjustments, so payouts land on an irregular schedule and vary in size rather than arriving as a steady check.flexshares.com

• VTIP Short maturities cut both ways: less sensitivity to rates, and less exposure to shifts in long-run inflation expectations than a full-maturity TIPS fund such as SCHP.
• Income rides on CPI accruals, so the quarterly payout moves around rather than arriving as a steady coupon.
• This is one narrow slice of one market, short US Treasury TIPS, not a diversified bond portfolio.

Full TDTT profile⁠

Full VTIP profile⁠