TMSFvsMFSBETF Comparison
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T. Rowe Price Multi-Sector Income ETF (TMSF) belongs to the Intl Aggregate Bonds segment. MFS Active Core Plus Bond ETF (MFSB) is part of the US Aggregate Bonds segment. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. TMSF is more expensive with a Total Expense Ratio (TER) of 0.37%, versus 0.34% for MFSB. TMSF is up 1.47% year-to-date (YTD) with +$34M in YTD flows. MFSB performs worse with -1.09% YTD performance, and +$582M in YTD flows. Run a side-by-side ETF comparison of TMSF and MFSB 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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TMSF vs MFSB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | TMSF MFSB | -0.52%-0.32% | -0.97%-1.78% | +1.47%-1.09% | n/a-1.05% | n/an/a | n/an/a |
| Flows | TMSF MFSB | +$1M+$151M | +$1M+$244M | +$34M+$582M | -+$631M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TMSF MFSB | +2.85%+3.97% | n/a+3.51% | n/an/a | n/an/a |
| Max drawdown | TMSF MFSB | -2.32%-3.18% | n/a-4.09% | n/an/a | n/an/a |
| Max drawdown duration | TMSF MFSB | 51d52d | n/a229d | n/an/a | n/an/a |
Trading data
TMSF | MFSB | |
Last sale 10/19/2026 at 1:30 PM | $48.88 | $23.99 |
| Previous close 10/16/2026 | $48.98 | $24.06 |
| Consolidated volume 10/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/19/2026 at 1:30 PM
Live
Closed
TMSF | MFSB | |
|---|---|---|
| Last price | $48.88 | $23.99 |
| 1D performance | -0.20% | -0.30% |
| AuM | $58.83 M | $719.76 M |
| E/R | 0.37% | 0.34% |
Characteristics
TMSF | MFSB | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | T. Rowe Price | MFS |
| Benchmark | - | - |
| N° of holdings | 220 | 237 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 19, 2025 | December 4, 2024 |
| ESG | No | No |
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Exposure
Countries
TMSF
USA
53.64%
Other
46.36%
MFSB
USA
57.49%
Other
42.51%
Sectors
TMSF
Sovereign
18.95%
Finance
15.53%
Other
65.52%
MFSB
Sovereign
27.4%
Finance
19.95%
Industrials
8.05%
Other
44.6%
Diversification
TMSF
Total weight of top 15 holdings out of 15
18.27%
MFSB
Total weight of top 15 holdings out of 15
27.94%
Top 15 holdings
Data as of August 31, 2026
TMSF
USA, TIPS 1.875% 15jan2036, USD (A-2036)
4.11%
USA, Notes 4% 31may2028, USD (BC-2028)
2.44%
US87283Q8832
2.11%
USA, TIPS 1.125% 15oct2030, USD (AE-2030)
1.46%
Mexico, Bonos 8.5% 28feb2030, MXN
1.36%
Colombia, 5.375% 21jan2029, USD
1.02%
USA, Bonds 5% 15may2046, USD
0.72%
Brazil, 6.625% 15mar2035, USD
0.71%
Ecuador, 8.75% 29jan2034, USD
0.69%
USA, Bonds 5% 15may2056, USD
0.68%
Paraguay, 2.739% 29jan2033, USD
0.64%
Carvana, 14% 1jun2031, USD
0.63%
Afreximbank, 6.25% 23jan2032, USD
0.62%
JP Morgan, 0.5% 15jun2027, USD (A, Conv.)
0.55%
Civitas Resources, 9.625% 15jun2033, USD
0.54%
MFSB
USA, Bonds 4.625% 15nov2045, USD
9.13%
USA, Notes 3.875% 31jul2030, USD (AB-2030)
4.69%
USA, Bonds 4.625% 15nov2055, USD
3.92%
USA, Notes 4.125% 31oct2029, USD (AF-2029)
2.46%
US01F0306948
0.97%
USA, Bonds 4.625% 15nov2044, USD
0.92%
USA, Bonds 4.875% 15aug2045, USD
0.89%
USA, Bonds 4.5% 15nov2054, USD
0.88%
Boston Properties LP, 5.75% 15jan2035, USD
0.66%
Bank of America Corporation, 5.744% 12feb2036, USD (N)
0.61%
Highwoods Realty, 5.35% 15jan2033, USD
0.61%
Jefferies Financial Group, 5.5% 15feb2036, USD
0.57%
Corebridge Financial, 5.75% 15jan2034, USD
0.56%
US12570XAQ51
0.55%
USA, Bonds 4.25% 15feb2054, USD
0.54%
Frequently asked questions about TMSF and MFSB
How have the TMSF and MFSB ETFs performed in 2026?
As of October 15, 2026, TMSF is up 1.47% year-to-date (YTD), while MFSB has lost -1.09%. That puts TMSF better performer ahead so far this year.
Which ETF is attracting more investor money: TMSF or MFSB?
Year-to-date, the TMSF ETF saw +$34M in flows, compared to +$582M for MFSB.
Which ETF is bigger: TMSF or MFSB?
As of October 15, 2026, TMSF holds $58.83 M in assets under management (AUM), while MFSB manages $719.76 M.
What sectors do the TMSF and MFSB ETFs invest in?
TMSF leans toward sectors like Sovereign and Finance. Meanwhile, MFSB focuses on Sovereign, Finance and Industrials.
What are the top holdings of the TMSF ETF and MFSB ETF?
TMSF top holdings include USA, TIPS 1.875% 15jan2036, USD (A-2036), USA, Notes 4% 31may2028, USD (BC-2028) and US87283Q8832. MFSB holds in its top three: USA, Bonds 4.625% 15nov2045, USD, USA, Notes 3.875% 31jul2030, USD (AB-2030) and USA, Bonds 4.625% 15nov2055, USD.
Which ETF is more diversified: TMSF or MFSB?
TMSF holds 298 securities with 18.27% of its assets in the top 15. MFSB has 463 securities and a top 15 weight of 27.94%.
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Latest news about TMSF & MFSB
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