MYMKvsCATFETF Comparison
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State Street SPDR My2031 Municipal Bond ETF (MYMK) and American Century California Municipal Bond ETF (CATF) belong to the same industry segment: Municipal Bonds. Both ETFs have the same top 1 sector exposures: Municipal. MYMK is less expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.25% for CATF. MYMK is down -0.75% year-to-date (YTD) with +$6M in YTD flows. CATF performs worse with -1.82% YTD performance, and +$87M in YTD flows. Run a side-by-side ETF comparison of MYMK and CATF 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 CATF performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/19/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MYMK CATF | +0.15%-0.36% | -1.33%-3.30% | -0.75%-1.82% | -0.16%-1.15% | n/an/a | n/an/a |
| Flows | MYMK CATF | -+$55M | -+$64M | +$6M+$87M | +$6M+$92M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MYMK CATF | +3.01%+5.12% | +1.95%+3.23% | n/an/a | n/an/a |
| Max drawdown | MYMK CATF | -3.24%-5.54% | -4.17%-6.34% | n/an/a | n/an/a |
| Max drawdown duration | MYMK CATF | 67d91d | 232d105d | n/an/a | n/an/a |
Trading data
MYMK | CATF | |
Last sale 10/20/2026 at 1:30 PM | $24.41 | $47.99 |
| Previous close 10/19/2026 | $24.40 | $47.74 |
| Consolidated volume 10/19/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/20/2026 at 1:30 PM
Live
Closed
MYMK | CATF | |
|---|---|---|
| Last price | $24.41 | $47.99 |
| 1D performance | +0.02% | +0.52% |
| AuM | $10.98 M | $143.43 M |
| E/R | 0.2% | 0.25% |
Characteristics
MYMK | CATF | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | State Street Investment Management | American Century Investments |
| Benchmark | - | - |
| N° of holdings | 41 | 109 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 17, 2025 | July 18, 2024 |
| ESG | No | No |
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Exposure
Countries
MYMK
USA
39.6%
Other
60.4%
CATF
USA
39.08%
Other
60.92%
Sectors
MYMK
Municipal
39.6%
Other
60.4%
CATF
Municipal
39.08%
Other
60.92%
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Diversification
MYMK
Total weight of top 15 holdings out of 15
41.46%
CATF
Total weight of top 15 holdings out of 15
12.15%
Top 15 holdings
Data as of August 31, 2026
MYMK
County of Harris, 5% 15aug2031, USD (2018A)
3.69%
US915260FC21
3.63%
US13068XBJ72
3.50%
US544532DF87
3.25%
US166394FB70
2.93%
US45528US858
2.88%
US80189RFG56
2.78%
US61334PFP36
2.67%
US4787182E83
2.54%
Connecticut, 5% 1may2041, USD
2.47%
Alabama Public School and College Authority, 5% 1nov2034, USD (2020-A)
2.44%
US54641CAM73
2.23%
US2077583E11
2.21%
State of Ohio, 5% 15jun2034, USD (2021A)
2.13%
US426362NK18
2.11%
CATF
California, 3.5% 1dec2030, USD
1.43%
Riverside Transportation Commission, 4% 1jun2046, USD
0.91%
US684133KT71
0.87%
California, 4% 1sep2043, USD
0.86%
US13032UN611
0.84%
East AWP Joint Powers Authority, 3.125% 1sep2026, USD (2024A)
0.82%
Puerto Rico Sales Tax Financing Corp., 4.329% 1jul2040, USD
0.82%
California Community Choice Financing Authority, 5.25% 1feb2036, USD (2026C)
0.76%
US13048VV394
0.73%
US13032UX453
0.72%
California Community Choice Financing Authority, 5% 1aug2055, USD (2024C)
0.71%
Desert Community College District, 5% 1aug2051, USD (2016)
0.69%
US544647JV34
0.67%
US13032U6J26
0.67%
California Community Choice Financing Authority, 5% 1feb2055, USD (2024D)
0.67%
Frequently asked questions about MYMK and CATF
How have the MYMK and CATF ETFs performed in 2026?
As of October 19, 2026, MYMK is down -0.75% year-to-date (YTD), while CATF has lost -1.82%. That puts MYMK better performer ahead so far this year.
Which ETF is attracting more investor money: MYMK or CATF?
Year-to-date, the MYMK ETF saw +$6M in flows, compared to +$87M for CATF.
Which ETF is more volatile: MYMK or CATF?
Over the past year, MYMK had a volatility of 1.95%, while CATF experienced 3.23%.
Which ETF is bigger: MYMK or CATF?
As of October 19, 2026, MYMK holds $10.98 M in assets under management (AUM), while CATF manages $143.43 M.
What sectors do the MYMK and CATF ETFs invest in?
MYMK leans toward sectors like Municipal. Meanwhile, CATF focuses on Municipal.
What are the top holdings of the MYMK ETF and CATF ETF?
MYMK top holdings include County of Harris, 5% 15aug2031, USD (2018A), US915260FC21 and US13068XBJ72. CATF holds in its top three: California, 3.5% 1dec2030, USD, Riverside Transportation Commission, 4% 1jun2046, USD and US684133KT71.
Which ETF is more diversified: MYMK or CATF?
MYMK holds 84 securities with 41.46% of its assets in the top 15. CATF has 312 securities and a top 15 weight of 12.15%.
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