MYMKvsIROCETF Comparison
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State Street SPDR My2031 Municipal Bond ETF (MYMK) belongs to the Municipal Bonds segment. Invesco Rochester High Yield Municipal ETF (IROC) is part of the US Aggregate Bonds segment. Both ETFs have the same top 1 sector exposures: Municipal. MYMK is less expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.4% for IROC. MYMK is up 0.47% year-to-date (YTD) with +$6M in YTD flows. IROC performs worse with -0.01% YTD performance, and +$50M in YTD flows. Run a side-by-side ETF comparison of MYMK and IROC 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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MYMK vs IROC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 08/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MYMK IROC | +0.31%-0.56% | +0.05%-0.53% | +0.47%-0.01% | n/a+3.92% | n/a+12.94% | n/an/a |
| Flows | MYMK IROC | -+$23M | +$1M+$32M | +$6M+$50M | -+$125M | -+$125M | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MYMK IROC | +1.40%+2.67% | n/a+2.50% | n/a+3.28% | n/an/a |
| Max drawdown | MYMK IROC | -1.13%-2.12% | n/a-2.56% | n/a-4.12% | n/an/a |
| Max drawdown duration | MYMK IROC | 52d52d | n/a115d | n/a188d | n/an/a |
Trading data
MYMK | IROC | |
Last sale 8/27/2026 at 1:30 PM | $24.82 | $50.19 |
| Previous close 08/27/2026 | $24.83 | $50.24 |
| Consolidated volume 08/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 8/27/2026 at 1:30 PM
Live
Closed
MYMK | IROC | |
|---|---|---|
| Last price | $24.82 | $50.19 |
| 1D performance | -0.06% | -0.08% |
| AuM | $11.16 M | $154.21 M |
| E/R | 0.2% | 0.4% |
Characteristics
MYMK | IROC | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | State Street Investment Management | Invesco |
| Benchmark | - | - |
| N° of holdings | 41 | 64 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 17, 2025 | September 12, 2022 |
| ESG | No | No |
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Exposure
Countries
MYMK
USA
39.57%
Other
60.43%
IROC
USA
40.34%
Other
59.66%
Sectors
MYMK
Municipal
39.57%
Other
60.43%
IROC
Municipal
40.34%
Other
59.66%
Diversification
MYMK
Total weight of top 15 holdings out of 15
41.5%
IROC
Total weight of top 15 holdings out of 15
18.68%
Top 15 holdings
Data as of July 31, 2026
MYMK
County of Harris, 5% 15aug2031, USD (2018A)
3.69%
US915260FC21
3.63%
US13068XBJ72
3.51%
US544532DF87
3.27%
US166394FB70
2.93%
US45528US858
2.88%
US80189RFG56
2.77%
US61334PFP36
2.66%
US4787182E83
2.56%
Connecticut, 5% 1may2041, USD
2.49%
Alabama Public School and College Authority, 5% 1nov2034, USD (2020-A)
2.44%
US54641CAM73
2.23%
US2077583E11
2.20%
State of Ohio, 5% 15jun2034, USD (2021A)
2.13%
US426362NK18
2.11%
IROC
US121342PQ61
1.53%
Washington Suburban Sanitary District, FRN 1jun2027, USD
1.53%
US647370EK77
1.53%
US20775DTU62
1.53%
Black Belt Energy Gas District, 5% 1nov2036, USD (2026)
1.19%
US20775DU831
1.16%
US83704HAM97
1.16%
Central Plains Energy Gas Project, 5% 1sep2042, USD (2017A)
1.16%
Lake Retirement Facility, 5.75% 15aug2055, USD (2020A)
1.15%
US63608TBQ22
1.15%
Bucks Industrial Development Authority, 5% 1jul2054, USD (2021)
1.13%
Massachusetts Development Finance Agency, 5.375% 1jul2061, USD (2026A)
1.12%
US13059TFH77
1.11%
Massachusetts Development Finance Agency, 5% 1jan2047, USD
1.11%
US928097AA20
1.11%
Frequently asked questions about MYMK and IROC
How have the MYMK and IROC ETFs performed in 2026?
As of August 27, 2026, MYMK is up 0.47% year-to-date (YTD), while IROC has lost -0.01%. That puts MYMK better performer ahead so far this year.
Which ETF is attracting more investor money: MYMK or IROC?
Year-to-date, the MYMK ETF saw +$6M in flows, compared to +$50M for IROC.
Which ETF is bigger: MYMK or IROC?
As of August 27, 2026, MYMK holds $11.16 M in assets under management (AUM), while IROC manages $154.21 M.
What sectors do the MYMK and IROC ETFs invest in?
MYMK leans toward sectors like Municipal. Meanwhile, IROC focuses on Municipal.
What are the top holdings of the MYMK ETF and IROC ETF?
MYMK top holdings include County of Harris, 5% 15aug2031, USD (2018A), US915260FC21 and US13068XBJ72. IROC holds in its top three: US121342PQ61, Washington Suburban Sanitary District, FRN 1jun2027, USD and US647370EK77.
Which ETF is more diversified: MYMK or IROC?
MYMK holds 83 securities with 41.5% of its assets in the top 15. IROC has 155 securities and a top 15 weight of 18.68%.
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