TBUX vs VUSB

TBUXBT. Rowe Price Ultra Short-Term Bond ETF

VUSBAVanguard Ultra-Short Bond ETF

In short

TBUX An actively run cash-plus bond fund that reaches past T-bills into corporate and securitized credit, while the prospectus keeps average effective maturity on a 1.5-year leash. Costs 0.17% and pays monthly.

VUSB Vanguard's first actively managed bond ETF, run by its in-house fixed income team and priced at 0.10%. It holds investment-grade paper maturing inside two years: a step past a money fund, well short of a real bond fund.

Stated mandate

TBUX The fund seeks a high level of income consistent with low volatility of principal value. It invests in a diversified portfolio of shorter-term investment-grade corporate and government securities.

VUSB The fund seeks current income with limited price volatility while investing in diversified high- and medium-quality fixed-income securities. It expects to maintain a dollar-weighted average maturity of 0–2 years.

Why people hold it

• TBUX At 0.17%, it charges less than the typical ultrashort bond ETF, which matters in a corner of the market where the whole return comes from short-maturity yield.
• The active mandate roams investment-grade corporates, asset-backed paper, bank obligations and mortgage bonds rather than tracking one narrow slice of the short end.troweprice.com
• Prospectus holds dollar-weighted average effective maturity to 1.5 years or less, so rate sensitivity stays short even though an individual bond can run out to five years.troweprice.com
• Income lands monthly, and the fund has grown past the billion-dollar mark into one of the stronger builds in its ultrashort peer group.

• VUSB At 0.10%, it costs half the typical ultra-short bond ETF and undercuts the other leaders in the group: SHV, PULS, FLDR and DUSB all charge 0.15%.
• Active, not adventurous. The managers buy investment-grade bonds (A3-or-better high quality plus BBB-tier medium quality) and hold average maturity to zero-to-two years.vanguard.com
• Income lands monthly, sourced from roughly 170 bonds, so no single issuer drives the outcome.
• A multi-billion-dollar fund that trades actively, and the same portfolio team also runs a similar Vanguard ultra-short fund.vanguard.com

Worth knowing

• TBUX Index-run rivals cost less: VUSB at 0.10%, SHV at 0.15%. The gap is what an active manager picking the paper costs you.
• Corporate and securitized holdings carry credit risk a Treasury-only fund skips. Everything is investment grade at purchase, but a later downgrade does not force a sale.troweprice.com
• Trading is moderate rather than heavy, so spreads can run wider than the category's busiest names when markets get choppy.

• VUSB This is not a money market fund. No fixed $1 share price, and the market price can trade above or below the value of the holdings.vanguard.com
• The mandate allows BBB-tier credit, a notch of risk a Treasury-only neighbor like SHV doesn't take.vanguard.com
• Bonds this short reprice with short-term rates, so the monthly payout drifts up and down instead of holding a set level.vanguard.com

Full TBUX profile⁠

Full VUSB profile⁠