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 0.4% year-to-date (YTD) with +$1M in YTD flows. AMUN performs better with 1.98% YTD performance, and +$29M 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 10/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | TMNS AMUN | -0.14%+0.10% | -1.05%+0.44% | +0.40%+1.98% | n/a+2.58% | n/an/a | n/an/a |
| Flows | TMNS AMUN | -$1M+$3M | +$1M+$5M | +$1M+$29M | -+$58M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TMNS AMUN | +2.73%+0.47% | n/a+0.32% | n/an/a | n/an/a |
| Max drawdown | TMNS AMUN | -2.76%-0.31% | n/a-0.31% | n/an/a | n/an/a |
| Max drawdown duration | TMNS AMUN | 51d36d | n/a36d | n/an/a | n/an/a |
Trading data
TMNS | AMUN | |
Last sale 10/16/2026 at 1:30 PM | $49.10 | $26.00 |
| Previous close 10/15/2026 | $49.08 | $25.99 |
| Consolidated volume 10/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
TMNS | AMUN | |
|---|---|---|
| Last price | $49.10 | $26.00 |
| 1D performance | +0.02% | +0.08% |
| AuM | $22.08 M | $58.20 M |
| E/R | 0.18% | 0.74% |
Characteristics
TMNS | AMUN | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | T. Rowe Price | abrdn |
| Benchmark | - | - |
| N° of holdings | 58 | 18 |
| 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
29.18%
Other
70.82%
AMUN
USA
27.85%
Other
72.15%
Sectors
TMNS
Municipal
29.18%
Other
70.82%
AMUN
Municipal
27.62%
Other
72.38%
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Diversification
TMNS
Total weight of top 15 holdings out of 15
25.29%
AMUN
Total weight of top 15 holdings out of 15
46.38%
Top 15 holdings
Data as of August 31, 2026
TMNS
US23503CFK80
2.22%
US735240L842
2.13%
New York Housing Finance Agency, FRN 1may2049, USD
2.11%
US09182TCG04
1.87%
California Community Choice Financing Authority, 5.5% 1oct2054, USD (2023F)
1.82%
US650116DJ25
1.78%
New York Mortgage Agency, 3.4% 1oct2030, USD
1.67%
US735389D620
1.67%
US546068AZ00
1.55%
Illinois Toll Highway Authority, 5% 1jan2031, USD
1.55%
US425507GL89
1.44%
US64988YQ831
1.40%
US04052FDU66
1.38%
Puerto Rico, 5.75% 1jul2031, USD
1.37%
US187145WS29
1.35%
AMUN
US46640KYU23
3.99%
US230589AB90
3.68%
Chandler Industrial Development Authority, 5% 1sep2052, USD (2022-2)
3.66%
Newark, 4.25% 5may2027, USD (2026)
3.64%
US478232SD45
3.64%
US88035TZV50
3.62%
US7386297S79
3.62%
US64972GU289
3.26%
Mississippi Business Finance Corp., FRN 1nov2032, USD (2007A)
2.97%
US414008CX87
2.67%
Main Street Natural Gas Inc., 4% 1may2052, USD
2.59%
US546598AB98
2.54%
PEFA Inc., 5% 1sep2049, USD (2019)
2.27%
US06964KAB26
2.17%
US20774YV531
2.06%
Frequently asked questions about TMNS and AMUN
How have the TMNS and AMUN ETFs performed in 2026?
As of October 15, 2026, TMNS is up 0.4% year-to-date (YTD), while AMUN has returned 1.98%. 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 +$1M in flows, compared to +$29M for AMUN.
Which ETF is bigger: TMNS or AMUN?
As of October 15, 2026, TMNS holds $22.08 M in assets under management (AUM), while AMUN manages $58.20 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 US23503CFK80, US735240L842 and New York Housing Finance Agency, FRN 1may2049, USD. AMUN holds in its top three: US46640KYU23, US230589AB90 and Chandler Industrial Development Authority, 5% 1sep2052, USD (2022-2).
Which ETF is more diversified: TMNS or AMUN?
TMNS holds 208 securities with 25.29% of its assets in the top 15. AMUN has 68 securities and a top 15 weight of 46.38%.
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