TMNSvsAMUNETF Comparison
VS
T. Rowe Price Short Municipal Income ETF (TMNS) and abrdn Ultra Short Municipal Income Active ETF (AMUN) belong to the same industry segment: Municipal Bonds. TMNS's top 1 sector exposures are Municipal. In contrast, AMUN's top sector exposures are Municipal and Non-Corporate. TMNS is less expensive with a Total Expense Ratio (TER) of 0.18%, versus 0.74% for AMUN. TMNS is up 1.25% year-to-date (YTD) with +$2M in YTD flows. AMUN performs better with 1.88% YTD performance, and +$25M in YTD flows. Run a side-by-side ETF comparison of TMNS and AMUN below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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TMNS vs AMUN performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/01/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | TMNS AMUN | +0.18%+0.24% | +0.18%+0.65% | +1.25%+1.88% | n/an/a | n/an/a | n/an/a |
| Flows | TMNS AMUN | +$1M+$2M | +$2M+$1M | +$2M+$25M | -- | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TMNS AMUN | +1.12%+0.34% | n/an/a | n/an/a | n/an/a |
| Max drawdown | TMNS AMUN | -0.76%-0.03% | n/an/a | n/an/a | n/an/a |
| Max drawdown duration | TMNS AMUN | 57d2d | n/an/a | n/an/a | n/an/a |
Trading data
TMNS | AMUN | |
Last sale 9/3/2026 at 1:30 PM | $49.62 | $26.04 |
| Previous close 09/02/2026 | $49.67 | $26.04 |
| Consolidated volume 09/02/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/3/2026 at 1:30 PM
Live
Closed
TMNS | AMUN | |
|---|---|---|
| Last price | $49.62 | $26.04 |
| 1D performance | -0.08% | +0.00% |
| AuM | $23.58 M | $55.04 M |
| E/R | 0.18% | 0.74% |
Characteristics
TMNS | AMUN | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | T. Rowe Price | abrdn |
| Benchmark | - | - |
| N° of holdings | 56 | 17 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 19, 2025 | October 17, 2025 |
| ESG | No | No |
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Exposure
Countries
TMNS
USA
31.14%
Other
68.86%
AMUN
USA
33.29%
Other
66.71%
Sectors
TMNS
Municipal
31.14%
Other
68.86%
AMUN
Municipal
33.11%
Other
66.89%
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Diversification
TMNS
Total weight of top 15 holdings out of 15
28.33%
AMUN
Total weight of top 15 holdings out of 15
53.8%
Top 15 holdings
Data as of July 31, 2026
TMNS
US425507GL89
3.14%
US23503CFK80
2.35%
US735240L842
2.25%
New York Housing Finance Agency, FRN 1may2049, USD
2.21%
US09182TCG04
1.98%
California Community Choice Financing Authority, 5.5% 1oct2054, USD (2023F)
1.93%
US650116DJ25
1.88%
US735389D620
1.77%
New York Mortgage Agency, 3.4% 1oct2030, USD
1.74%
Illinois Toll Highway Authority, 5% 1jan2031, USD
1.64%
US546068AZ00
1.63%
US64988YQ831
1.48%
US04052FDU66
1.46%
Puerto Rico, 5.75% 1jul2031, USD
1.45%
US187145WS29
1.43%
AMUN
Massachusetts Port Authority, 5% 1jul2043, USD (2016-B)
4.70%
Tennessee Energy Acquisition Corp., 5.625% 1sep2026, USD
4.14%
US46640KYU23
4.13%
US546598AA16
3.95%
US230589AB90
3.81%
Chandler Industrial Development Authority, 5% 1sep2052, USD (2022-2)
3.79%
Newark, 4.25% 5may2027, USD (2026)
3.77%
US478232SD45
3.77%
US34074EAF60
3.76%
US88035TZV50
3.76%
US7386297S79
3.75%
Mississippi Business Finance Corp., FRN 1nov2032, USD (2007A)
3.08%
US414008CX87
2.77%
PEFA Inc., 5% 1sep2049, USD (2019)
2.35%
US06964KAB26
2.26%
Frequently asked questions about TMNS and AMUN
How have the TMNS and AMUN ETFs performed in 2026?
As of September 1, 2026, TMNS is up 1.25% year-to-date (YTD), while AMUN has returned 1.88%. That puts AMUN better performer ahead so far this year.
Which ETF is attracting more investor money: TMNS or AMUN?
Year-to-date, the TMNS ETF saw +$2M in flows, compared to +$25M for AMUN.
Which ETF is bigger: TMNS or AMUN?
As of September 1, 2026, TMNS holds $23.58 M in assets under management (AUM), while AMUN manages $55.04 M.
What sectors do the TMNS and AMUN ETFs invest in?
TMNS leans toward sectors like Municipal. Meanwhile, AMUN focuses on Municipal.
What are the top holdings of the TMNS ETF and AMUN ETF?
TMNS top holdings include US425507GL89, US23503CFK80 and US735240L842. AMUN holds in its top three: Massachusetts Port Authority, 5% 1jul2043, USD (2016-B), Tennessee Energy Acquisition Corp., 5.625% 1sep2026, USD and US46640KYU23.
Which ETF is more diversified: TMNS or AMUN?
TMNS holds 183 securities with 28.33% of its assets in the top 15. AMUN has 63 securities and a top 15 weight of 53.8%.
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