THYMvsIROCETF Comparison
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T. Rowe Price High Income Municipal ETF (THYM) 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. THYM is less expensive with a Total Expense Ratio (TER) of 0.32%, versus 0.4% for IROC. THYM is up 0.28% year-to-date (YTD) with +$6M in YTD flows. IROC performs worse with -1.83% YTD performance, and +$56M in YTD flows. Run a side-by-side ETF comparison of THYM 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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THYM vs IROC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/10/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | THYM IROC | -2.73%-2.62% | -2.88%-2.90% | +0.28%-1.83% | n/a-0.22% | n/a+10.78% | n/an/a |
| Flows | THYM IROC | +$1M+$10M | +$4M+$38M | +$6M+$56M | -+$131M | -+$131M | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | THYM IROC | +3.70%+3.48% | n/a+2.64% | n/a+3.35% | n/an/a |
| Max drawdown | THYM IROC | -3.92%-4.15% | n/a-4.15% | n/a-4.15% | n/an/a |
| Max drawdown duration | THYM IROC | 67d67d | n/a67d | n/a67d | n/an/a |
Trading data
THYM | IROC | |
Last sale 9/14/2026 at 1:30 PM | $48.72 | $49.17 |
| Previous close 09/11/2026 | $48.81 | $49.35 |
| Consolidated volume 09/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/14/2026 at 1:30 PM
Live
Closed
THYM | IROC | |
|---|---|---|
| Last price | $48.72 | $49.17 |
| 1D performance | -0.19% | -0.35% |
| AuM | $27.99 M | $157.31 M |
| E/R | 0.32% | 0.4% |
Characteristics
THYM | IROC | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | T. Rowe Price | Invesco |
| Benchmark | - | - |
| N° of holdings | 93 | 64 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 19, 2025 | September 12, 2022 |
| ESG | No | No |
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Exposure
Countries
THYM
USA
42.5%
Other
57.5%
IROC
USA
40.34%
Other
59.66%
Sectors
THYM
Municipal
42.5%
Other
57.5%
IROC
Municipal
40.34%
Other
59.66%
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Diversification
THYM
Total weight of top 15 holdings out of 15
17.54%
IROC
Total weight of top 15 holdings out of 15
18.68%
Top 15 holdings
Data as of July 31, 2026
THYM
US74529JQM08
1.81%
Maryland Economic Development Corp., 5.25% 30jun2052, USD (2022B)
1.69%
Buckeye Tobacco Settlement Financing Authority, 5% 1jun2055, USD (2020B-2)
1.44%
US13078YXQ33
1.19%
Puerto Rico, FRN 1nov2051, USD
1.17%
US717901CE01
1.15%
US246372BC95
1.14%
Tobacco Settlement Financing Corp. (NJ), 5% 1jun2046, USD (2018B)
1.09%
Puerto Rico, 4% 1jul2046, USD
1.04%
US246387RS50
1.03%
US86607JAD63
1.01%
US13048V6W31
1.00%
US574218T373
0.96%
US60416UW684
0.94%
US165588FN90
0.89%
IROC
US121342PQ61
1.53%
US647370EK77
1.53%
Washington Suburban Sanitary District, FRN 1jun2027, USD
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 THYM and IROC
How have the THYM and IROC ETFs performed in 2026?
As of September 10, 2026, THYM is up 0.28% year-to-date (YTD), while IROC has lost -1.83%. That puts THYM better performer ahead so far this year.
Which ETF is attracting more investor money: THYM or IROC?
Year-to-date, the THYM ETF saw +$6M in flows, compared to +$56M for IROC.
Which ETF is bigger: THYM or IROC?
As of September 10, 2026, THYM holds $27.99 M in assets under management (AUM), while IROC manages $157.31 M.
What sectors do the THYM and IROC ETFs invest in?
THYM leans toward sectors like Municipal. Meanwhile, IROC focuses on Municipal.
What are the top holdings of the THYM ETF and IROC ETF?
THYM top holdings include US74529JQM08, Maryland Economic Development Corp., 5.25% 30jun2052, USD (2022B) and Buckeye Tobacco Settlement Financing Authority, 5% 1jun2055, USD (2020B-2). IROC holds in its top three: US121342PQ61, US647370EK77 and Washington Suburban Sanitary District, FRN 1jun2027, USD.
Which ETF is more diversified: THYM or IROC?
THYM holds 226 securities with 17.54% of its assets in the top 15. IROC has 155 securities and a top 15 weight of 18.68%.
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