FUSIvsSMBSETF Comparison
ETF 1
FUSI
American Century Multisector Floating Income ETF
This fund is part of
US Aggregate Bonds
-0.02%
VS
American Century Multisector Floating Income ETF (FUSI) belongs to the US Aggregate Bonds segment. Schwab Mortgage-Backed Securities ETF (SMBS) is part of the MBS & ABS segment. FUSI's top 2 sector exposures are Industrials and Sovereign. In contrast, SMBS's top sector exposures are Industrials, Finance and Government Agencies. FUSI is more expensive with a Total Expense Ratio (TER) of 0.19%, versus 0.03% for SMBS. FUSI is up 3.27% year-to-date (YTD) with +$18M in YTD flows. SMBS performs worse with -1.31% YTD performance, and +$815M in YTD flows. Run a side-by-side ETF comparison of FUSI and SMBS 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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FUSI vs SMBS performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | FUSI SMBS | +0.26%-1.64% | +1.06%-2.55% | +3.27%-1.31% | +4.72%-0.30% | +17.93%n/a | n/an/a |
| Flows | FUSI SMBS | +$15M-$9M | +$18M+$142M | +$18M+$815M | -$10M+$1.21B | +$20M- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | FUSI SMBS | +0.25%+4.53% | +0.29%+3.94% | +0.42%n/a | n/an/a |
| Max drawdown | FUSI SMBS | -0.02%-2.83% | -0.08%-3.25% | -0.32%n/a | n/an/a |
| Max drawdown duration | FUSI SMBS | 3d79d | 4d199d | 19dn/a | n/an/a |
Trading data
FUSI | SMBS | |
Last sale 9/16/2026 at 7:59 PM | $50.42 | $24.57 |
| Previous close 09/16/2026 | $50.45 | $24.45 |
| Consolidated volume 09/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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FUSI
is actively managed and doesn’t replicate an indexFUSI | SMBS | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/16/2026 at 7:59 PM
Live
Closed
FUSI | SMBS | |
|---|---|---|
| Last price | $50.42 | $24.57 |
| 1D performance | -0.07% | +0.47% |
| AuM | $40.31 M | $6.38 B |
| E/R | 0.19% | 0.03% |
Characteristics
FUSI | SMBS | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | American Century Investments | Schwab ETFs |
| Benchmark | - | Bloomberg U.S. MBS Float Adjusted Index |
| N° of holdings | 17 | 443 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | March 16, 2023 | November 19, 2024 |
| ESG | No | No |
Exposure
Countries
FUSI
USA
33.18%
Other
66.82%
SMBS
USA
34%
Other
66%
Sectors
FUSI
Industrials
23.26%
Sovereign
9.92%
Other
66.82%
SMBS
Industrials
33.45%
Other
66.55%
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Diversification
FUSI
Total weight of top 15 holdings out of 15
45.28%
SMBS
Total weight of top 15 holdings out of 15
5.64%
Top 15 holdings
Data as of July 31, 2026
FUSI
USA, Notes FRN 31jan2027, USD (AX-2027)
9.92%
LCM 35A, FRN 15oct2034, USD (ABS, BR)
4.41%
Atlas Senior Loan Fund 2021-17A, FRN 20oct2034, USD (ABS, B1)
3.31%
US3136BV2T46
2.98%
US12659VAA89
2.51%
US48251FAJ03
2.25%
US929342AA13
2.23%
BX Commercial Mortgage Trust 2026-CSMO, FRN 17feb2043, USD (ABS, A)
2.21%
US559916AG67
2.21%
Brant Point CLO 2023-1A, FRN 26jul2038, USD (ABS, BR)
2.21%
TPG Real Estate Finance Issuer 2025-FL6, FRN 18sep2042, USD (ABS, A)
2.21%
US05594VAC63
2.21%
US55819GBC24
2.21%
US883932AS42
2.21%
US87168YAS90
2.21%
SMBS
G2 MB0025, 5% 20nov2054, USD (ABS)
0.67%
FR SD8469, 5.5% 1oct2054, USD (ABS)
0.49%
US31418DYX47
0.40%
US31427R6E50
0.39%
FR SD8193, 2% 1feb2052, USD (ABS)
0.37%
FR SD8106, 2% 1nov2050, USD (ABS)
0.35%
US3618N6HU47
0.35%
US3618N56H72
0.35%
US3618N53X59
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%
US3142J6BK85
0.30%
US3132DWAN39
0.30%
Frequently asked questions about FUSI and SMBS
How have the FUSI and SMBS ETFs performed in 2026?
As of September 16, 2026, FUSI is up 3.27% year-to-date (YTD), while SMBS has lost -1.31%. That puts FUSI better performer ahead so far this year.
Which ETF is attracting more investor money: FUSI or SMBS?
Year-to-date, the FUSI ETF saw +$18M in flows, compared to +$815M for SMBS.
Which ETF is more volatile: FUSI or SMBS?
Over the past year, FUSI had a volatility of 0.29%, while SMBS experienced 3.94%.
Which ETF is bigger: FUSI or SMBS?
As of September 16, 2026, FUSI holds $40.31 M in assets under management (AUM), while SMBS manages $6.38 B.
What sectors do the FUSI and SMBS ETFs invest in?
FUSI leans toward sectors like Industrials and Sovereign. Meanwhile, SMBS focuses on Industrials.
What are the top holdings of the FUSI ETF and SMBS ETF?
FUSI top holdings include USA, Notes FRN 31jan2027, USD (AX-2027), LCM 35A, FRN 15oct2034, USD (ABS, BR) and Atlas Senior Loan Fund 2021-17A, FRN 20oct2034, USD (ABS, B1). SMBS holds in its top three: G2 MB0025, 5% 20nov2054, USD (ABS), FR SD8469, 5.5% 1oct2054, USD (ABS) and US31418DYX47.
Which ETF is more diversified: FUSI or SMBS?
FUSI holds 61 securities with 45.28% of its assets in the top 15. SMBS has 1999 securities and a top 15 weight of 5.64%.
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