257 essays 1,087 funds measured independent · not paid by any fund or issuer we cover

Fund · T. Rowe Price Ultra Short-Term Bond ETF · measured from SEC filings

TBUX holdings

TBUX reports 625 holdings and behaves like 283.9 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-05-31. The fact sheet publishes the first number; this page computes the second, and traces it across 19 quarters of filings.

Measured concentration

as of 2026-05-31
625 Positions reported
283.9 Effective holdings
2.2× Concentration multiple
9.27% Top ten weight

Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 0.13% at a quoted market price (level 1), 27 issuer countries, 0.28% restricted securities.

What stands out

as of 2026-05-31

TBUX's largest investment is US Treasury N/B 02/28 3.375 at 1.65% of net assets. Fnma Pool Ma4919 FN 02/53 Fixed 5.5 and Brunswick Corp Disc follow; the three together are 4.26%. Ten companies are 9.27% of the fund; the other 615 share the rest. Among the 192 bond funds measured here, TBUX behaves like 283.9 holdings against a median of 236.4 — close to the median. Across 19 quarterly filings TBUX has become less concentrated: it behaved like 84.3 at 2021-11-30 and 283.9 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 178 positions were added and 186 dropped; 49.7% of the weight moved. the United States is the largest country at 73.01% of the portfolio, across 27 countries in the filing.

Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable bond funds on this site. Nothing here is a view on the fund.

Every filing since 2021

19

Between 2021-11-30 and 2026-05-31, TBUX went from behaving like 84.3 equally weighted positions to 283.9 — 237% more, while its top ten went from 17.82% to 9.27% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-05-31 625 283.9 9.27% 1.64%
2026-02-28 635 273.5 9.63% 1.24%
2025-11-30 597 286.8 9.05% 1.48%
2025-08-31 596 286.8 9.32% 1.26%
2025-05-31 564 289.8 8.55% 1.4%
2025-02-28 537 287.2 8.54% 0.96%
2024-11-30 507 283.3 9.03% 1.23%
2024-08-31 460 279.9 8.34% 0.99%
Earlier filings (11 more, back to 2021-11-30)
PeriodHoldingsEffectiveTop 10Largest
2024-05-31 441 277.7 7.82% 0.91%
2024-02-29 381 235.4 9.1% 1.21%
2023-11-30 367 231.8 8.93% 1.04%
2023-08-31 367 218.4 9.82% 1.25%
2023-05-31 320 212.6 9.57% 1.84%
2023-02-28 324 220.4 9.55% 1.85%
2022-11-30 311 212.4 10.35% 1.58%
2022-08-31 313 197.5 11.56% 2.52%
2022-05-31 251 154.1 11.99% 3.98%
2022-02-28 202 142.3 12.84% 3.42%
2021-11-30 160 84.3 17.82% 7.31%

One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.

Largest positions, as filed

as of 2026-05-31

The 15 largest of 625 positions in TBUX's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: TBUX.csv.gz.

#PositionWeightCumulative
1US TREASURY N/B1.64%1.6%
2FNMA 30 YR1.60%3.2%
3BRUNSWICK CORP 4/2 144A CP0.99%4.2%
4INTL FLAVORS & FRAGRANCE 4/2 144A CP0.92%5.2%
5JPMCC 2016-NINE A 144A0.77%5.9%
6PHILLIPS 66 4/2 144A CP0.70%6.6%
7HOMES 2026-NQM3 A1 144A0.68%7.3%
8BATLN 2021-19A AR 144A0.67%8.0%
9US TREASURY N/B0.65%8.6%
10BAYER US FINANCE II LLC 144A0.65%9.3%
11BCC 2020-5A ARR 144A0.61%9.9%
12HONEYWELL AEROSPACE INC 144A0.61%10.5%
13SONIC 2020-1A A2I 144A0.60%11.1%
14MORGN 2019-5A AR2 144A0.56%11.6%
15AMERICAN HOMES 4 RENT0.55%12.2%

By country of issuer

as of 2026-05-31

Share of TBUX's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.

CountryShare
United States 72.97%
Cayman Islands° 7.58%
United Kingdom 4.24%
Canada 2.16%
Netherlands° 2.15%
France 2.03%
Bermuda° 1.14%
South Korea 1.04%

Returns the fund reported

2021-09 – 2026-05

Monthly total returns from Item B.5 of TBUX's own filings, 57 months on record. Not computed here and not from a price feed.

4.9%Last twelve months filed
21%Whole series, compounded
0.8%Best month
-0.5%Worst month

Cross-checked against a series computed separately from prices: median difference 0.04 percentage points over 56 months, which is roughly the distributions. Every month with the filing it came from: TBUX.json · all funds.

Who borrows TBUX's shares

2026-05-31

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-05-31, $1m was out to 3 borrowers, 0.12% of net assets. The largest, NATWEST MARKETS SECURITIES INC, held 46.9% of it.

BorrowerOn loanShare of the loan
NATWEST MARKETS SECURITIES INC $641,163 46.9%
BARCLAYS BANK PLC $594,001 43.4%
CITIGROUP GLOBAL MARKETS INC. $132,183 9.7%

Cash collateral reported against the loan: 0.12% of net assets, 100.3% of the amount lent. That is a floor on the collateral, not the whole of it — collateral the fund does not hold as a position is not in this filing, so a figure under 100% is not evidence of under-collateralisation. How that figure behaves across all funds. Every quarter TBUX has filed, with each borrower: TBUX.json · all funds.

Since the previous filing

2026-02-28 → 2026-05-31

631 positions became 623: 178 added (45.4% of the fund at the later date), 186 dropped (39.1% at the earlier date). Half the sum of all weight changes, a turnover proxy: 49.7%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of TBUX compared this way, as a feed: changes.xml · all funds: filings received.

Largest increases2026-02-282026-05-31Largest decreases2026-02-282026-05-31
DANSKE BANK A/S 144A0.10%0.52% CNH INDUSTRIAL CAP LLC0.41%0.17%
BOOZ ALLEN HAMILTON INC 144A0.10%0.48% STANDARD CHARTERED PLC 144A0.38%0.24%
JPMCC 2016-NINE B 144A0.08%0.40% MEDLINE BORROWER LP 144A0.32%0.18%
CVS HEALTH CORP0.04%0.34% BATLN 2016-10A A1R3 144A0.61%0.47%
BNP PARIBAS 144A0.10%0.39% FNMA 30 YR0.65%0.52%
EQUITABLE AMERICA GLOBAL 144A0.06%0.34% JPMCC 2016-NINE A 144A0.90%0.77%

New: US TREASURY N/B (1.64%), FNMA 30 YR (1.60%), BRUNSWICK CORP 4/2 144A CP (0.99%), INTL FLAVORS & FRAGRANCE 4/2 144A CP (0.92%), PHILLIPS 66 4/2 144A CP (0.70%), HOMES 2026-NQM3 A1 144A (0.68%). Gone: ENERGY TRANSFER PARTNERS 4/2 144A CP (1.24%), U S TREASURY BILL (1.11%), OVINTIV INC 4/2 CP (1.08%), BRUNSWICK CORP 4/2 144A CP (0.96%), GLOBAL PAYMENTS INC 4/2 CP (0.96%), STANLEY BLACK & DECKER 4/2 144A CP (0.94%).

Asset categories and pricing

as of 2026-05-31
Asset category (as filed)Share of investments
debt DBT65.74%
ABS-O ABS-O15.62%
mortgage-backed ABS-MBS12.08%
CDO/CLO ABS-CBDO6.43%
short-term investment STIV0.12%

0.1% of TBUX is carried at a quoted market price (fair-value level 1). Categories and levels are the filer's, from Form N-PORT; what a low level-1 share does and does not mean is in the measure's page.

Derivative exposure and counterparties

as of 2026-05-31

A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $1.14B. Notional of an interest-rate or currency swap is not equity exposure.

0%Stocks held directly
0%Swap notional (0)
-14.35%Futures notional (6)
-14.3%Sum, % of net assets

5 option positions filed, 2 of them written. The book as filed:

TypeSideStrikeExpiryUnderlying
PutPurchased652026-07-15as filed, not named
PutWritten752026-07-15as filed, not named
PutPurchased552026-06-17as filed, not named
PutWritten62.52026-06-17as filed, not named
CallPurchased104.6252026-07-24as filed, not named

Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).

Neighbours by effective holdings, debt funds

10

Every measured debt fund lined up by how many holdings it behaves like; these sit either side of TBUX (283.9). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
HMOP Hartford Municipal Opportunities ETF 624 271.2 10.03% 2026-07-31
JPST JPMorgan Ultra-Short Income ETF 805 271.6 10.65% 2026-05-31
MUNI PIMCO Intermediate Municipal Bond Active Exchange-Traded Fund 648 280.1 10.8% 2026-06-30
XEMD BondBloxx JP Morgan USD Emerging Markets 1-10 Year Bond ETF 425 282.3 9.56% 2026-07-31
IBDZ iShares iBonds Dec 2034 Term Corporate ETF 375 283.2 8.35% 2026-07-31
DFGP Dimensional Global Core Plus Fixed Income ETF 1,540 284.7 11.54% 2026-07-31
BBAG JPMorgan BetaBuilders U.S. Aggregate Bond ETF 1,810 286.5 11.44% 2026-05-31
EAGG iShares ESG Aware U.S. Aggregate Bond ETF 5,212 288.9 8.45% 2026-05-31
IGEB iShares Investment Grade Systematic Bond ETF 466 289.4 5.51% 2026-05-31
FLUD Franklin Ultra Short Bond ETF 519 307.6 8.86% 2026-06-30

Essays that examine TBUX

0

Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.