MUNXvsMYMIETF Comparison
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AMG GW&K Muni Income ETF (MUNX) and State Street SPDR My2029 Municipal Bond ETF (MYMI) belong to the same industry segment: Municipal Bonds. Both ETFs have the same top 1 sector exposures: Municipal. MUNX is more expensive with a Total Expense Ratio (TER) of 0.29%, versus 0.2% for MYMI. MUNX is down -1.61% year-to-date (YTD) with +$10M in YTD flows. MYMI performs better with 0.19% YTD performance, and +$2M in YTD flows. Run a side-by-side ETF comparison of MUNX and MYMI 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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MUNX vs MYMI performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/17/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MUNX MYMI | -2.76%-1.00% | -3.53%-1.00% | -1.61%+0.19% | n/a+0.77% | n/an/a | n/an/a |
| Flows | MUNX MYMI | -- | -+$1M | +$10M+$2M | -+$2M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MUNX MYMI | +3.68%+1.38% | n/a+1.11% | n/an/a | n/an/a |
| Max drawdown | MUNX MYMI | -4.33%-1.24% | n/a-1.26% | n/an/a | n/an/a |
| Max drawdown duration | MUNX MYMI | 73d73d | n/a120d | n/an/a | n/an/a |
Trading data
MUNX | MYMI | |
Last sale 9/18/2026 at 2:02 PM | $23.95 | $24.14 |
| Previous close 09/17/2026 | $24.03 | $24.09 |
| Consolidated volume 09/17/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/18/2026 at 2:02 PM
Live
Closed
MUNX | MYMI | |
|---|---|---|
| Last price | $23.95 | $24.14 |
| 1D performance | -0.32% | +0.21% |
| AuM | $19.17 M | $14.54 M |
| E/R | 0.29% | 0.2% |
Characteristics
MUNX | MYMI | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | AMG | State Street Investment Management |
| Benchmark | - | - |
| N° of holdings | 39 | 59 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 29, 2025 | September 23, 2024 |
| ESG | No | No |
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Exposure
Countries
MUNX
USA
50.25%
Other
49.75%
MYMI
USA
51.18%
Other
48.82%
Sectors
MUNX
Municipal
50.25%
Other
49.75%
MYMI
Municipal
51.18%
Other
48.82%
Diversification
MUNX
Total weight of top 15 holdings out of 15
32.67%
MYMI
Total weight of top 15 holdings out of 15
32.91%
Top 15 holdings
Data as of July 31, 2026
MUNX
Commonwealth Financing Authority, 4% 1jun2039, USD (2018)
3.06%
County of Jefferson (AL), 5.5% 1oct2053, USD (2024)
2.64%
US70868YAL39
2.57%
US03843TBQ31
2.23%
Houston, 5% 1sep2038, USD (2026C)
2.19%
US717823Y444
2.16%
US65889BEL45
2.15%
New York Transportation Development Corp., 6% 30jun2055, USD (2025)
2.13%
US46613SGA24
2.09%
Massachusetts Development Finance Agency, 5.5% 1oct2044, USD (2026A)
2.03%
Texas Private Activity Bond Surface Transportation Corp., 5% 30jun2058, USD (2019)
1.98%
US74448EAA29
1.92%
New York Urban Development Corp., 4% 31oct2034, USD (2021)
1.89%
New York Transportation Development Corp., 5% 1oct2040, USD (2020)
1.81%
US84136HCT86
1.80%
MYMI
US97705MT888
3.34%
Alabama Public School and College Authority, 5% 1nov2029, USD (2020-A)
2.37%
US298245MR91
2.37%
US46256QPK66
2.36%
US68607V4W22
2.36%
US050195WC67
2.34%
State of Delaware, 5% 1feb2032, USD (2019A)
2.34%
New York Municipal Water Finance Authority, 5% 15jun2040, USD
2.31%
US181059R735
2.28%
Weld School District №6, 5% 1dec2032, USD
2.01%
West Virginia, 5% 1sep2029, USD
1.82%
Hamilton (OH), 5% 1dec2029, USD (2016A)
1.79%
State of Utah, 5% 1jul2029, USD (2020)
1.76%
US924166KS98
1.74%
US49126PGR55
1.73%
Frequently asked questions about MUNX and MYMI
How have the MUNX and MYMI ETFs performed in 2026?
As of September 17, 2026, MUNX is down -1.61% year-to-date (YTD), while MYMI has returned 0.19%. That puts MYMI better performer ahead so far this year.
Which ETF is attracting more investor money: MUNX or MYMI?
Year-to-date, the MUNX ETF saw +$10M in flows, compared to +$2M for MYMI.
Which ETF is bigger: MUNX or MYMI?
As of September 17, 2026, MUNX holds $19.17 M in assets under management (AUM), while MYMI manages $14.54 M.
What sectors do the MUNX and MYMI ETFs invest in?
MUNX leans toward sectors like Municipal. Meanwhile, MYMI focuses on Municipal.
What are the top holdings of the MUNX ETF and MYMI ETF?
MUNX top holdings include Commonwealth Financing Authority, 4% 1jun2039, USD (2018), County of Jefferson (AL), 5.5% 1oct2053, USD (2024) and US70868YAL39. MYMI holds in its top three: US97705MT888, Alabama Public School and College Authority, 5% 1nov2029, USD (2020-A) and US298245MR91.
Which ETF is more diversified: MUNX or MYMI?
MUNX holds 74 securities with 32.67% of its assets in the top 15. MYMI has 104 securities and a top 15 weight of 32.91%.
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