SMBSvsTAXFETF Comparison
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Schwab Mortgage-Backed Securities ETF (SMBS) belongs to the MBS & ABS segment. American Century Diversified Municipal Bond ETF (TAXF) is part of the Municipal Bonds segment. SMBS's top 3 sector exposures are Industrials, Finance and Government Agencies. In contrast, TAXF's top sector exposures are Municipal. SMBS is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.25% for TAXF. SMBS is down -1.53% year-to-date (YTD) with +$770M in YTD flows. TAXF performs worse with -1.87% YTD performance, and +$186M in YTD flows. Run a side-by-side ETF comparison of SMBS and TAXF 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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SMBS vs TAXF performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SMBS TAXF | -0.22%-0.40% | -2.21%-3.76% | -1.53%-1.87% | -1.08%-1.18% | n/a+11.92% | n/a+1.98% |
| Flows | SMBS TAXF | -$72M+$40M | +$35M+$63M | +$770M+$186M | +$1.08B+$219M | -+$386M | -+$580M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SMBS TAXF | +5.52%+5.54% | +4.35%+3.44% | n/a+3.93% | n/a+3.88% |
| Max drawdown | SMBS TAXF | -4.24%-6.26% | -5.12%-6.91% | n/a-6.91% | n/a-13.26% |
| Max drawdown duration | SMBS TAXF | 52d92d | 229d103d | n/a103d | n/a1001d |
Trading data
SMBS | TAXF | |
Last sale 10/16/2026 at 1:30 PM | $24.29 | $47.83 |
| Previous close 10/15/2026 | $24.32 | $47.87 |
| Consolidated volume 10/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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TAXF
is actively managed and doesn’t replicate an indexSMBS | TAXF | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
SMBS | TAXF | |
|---|---|---|
| Last price | $24.29 | $47.83 |
| 1D performance | -0.12% | -0.08% |
| AuM | $6.29 B | $705.56 M |
| E/R | 0.03% | 0.25% |
Characteristics
SMBS | TAXF | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | Schwab ETFs | American Century Investments |
| Benchmark | Bloomberg U.S. MBS Float Adjusted Index | - |
| N° of holdings | 430 | 244 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 19, 2024 | September 10, 2018 |
| ESG | No | No |
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Exposure
Countries
SMBS
USA
33.79%
Other
66.21%
TAXF
USA
35.49%
Other
64.51%
Sectors
SMBS
Industrials
33.23%
Other
66.77%
TAXF
Municipal
35.49%
Other
64.51%
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Diversification
SMBS
Total weight of top 15 holdings out of 15
5.8%
TAXF
Total weight of top 15 holdings out of 15
8.47%
Top 15 holdings
Data as of August 31, 2026
SMBS
G2 MB0025, 5% 20nov2054, USD (ABS)
0.67%
US31427R6E50
0.59%
FR SD8469, 5.5% 1oct2054, USD (ABS)
0.48%
FR SD8193, 2% 1feb2052, USD (ABS)
0.40%
US31418DYX47
0.40%
FR SD8106, 2% 1nov2050, USD (ABS)
0.36%
US3618N6HU47
0.35%
FR RQ0110, 5% 1apr2056, USD (ABS)
0.34%
FR RQ0102, 5% 1mar2056, USD (ABS)
0.34%
US3132DWDC47
0.33%
FR SD7552, 2.5% 1jan2052, USD (ABS)
0.31%
US31418EQ948
0.31%
US3142J6BK85
0.30%
US3132DWAN39
0.30%
US3618N6NA19
0.30%
TAXF
US74442PN840
0.88%
Build NYC Resource Corp., 5.25% 15dec2031, USD (2026B-3)
0.88%
Arkansas Development Finance Authority, 4% 1sep2046, USD (2026A)
0.73%
US60637GRY79
0.65%
Puerto Rico Sales Tax Financing Corp., 4.329% 1jul2040, USD
0.58%
US646080ZU81
0.57%
US452252RA98
0.54%
Black Belt Energy Gas District, 5% 1oct2035, USD (2025)
0.54%
Southeast Alabama Gas Supply District, FRN 1aug2054, USD (A)
0.54%
US681725PH47
0.46%
Orlando Utilities Commission, 5% 1oct2048, USD (2023A)
0.45%
US74439YBD22
0.44%
US292723AY90
0.41%
US880157EC24
0.40%
Patriots Energy Group Financing Agency, 5.25% 1oct2054, USD (2023A-1)
0.40%
Frequently asked questions about SMBS and TAXF
How have the SMBS and TAXF ETFs performed in 2026?
As of October 16, 2026, SMBS is down -1.53% year-to-date (YTD), while TAXF has lost -1.87%. That puts SMBS better performer ahead so far this year.
Which ETF is attracting more investor money: SMBS or TAXF?
Year-to-date, the SMBS ETF saw +$770M in flows, compared to +$186M for TAXF.
Which ETF is more volatile: SMBS or TAXF?
Over the past year, SMBS had a volatility of 4.35%, while TAXF experienced 3.44%.
Which ETF is bigger: SMBS or TAXF?
As of October 16, 2026, SMBS holds $6.29 B in assets under management (AUM), while TAXF manages $705.56 M.
What sectors do the SMBS and TAXF ETFs invest in?
SMBS leans toward sectors like Industrials. Meanwhile, TAXF focuses on Municipal.
What are the top holdings of the SMBS ETF and TAXF ETF?
SMBS top holdings include G2 MB0025, 5% 20nov2054, USD (ABS), US31427R6E50 and FR SD8469, 5.5% 1oct2054, USD (ABS). TAXF holds in its top three: US74442PN840, Build NYC Resource Corp., 5.25% 15dec2031, USD (2026B-3) and Arkansas Development Finance Authority, 4% 1sep2046, USD (2026A).
Which ETF is more diversified: SMBS or TAXF?
SMBS holds 1965 securities with 5.8% of its assets in the top 15. TAXF has 792 securities and a top 15 weight of 8.47%.
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