MFSBvsTAGGETF Comparison
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MFS Active Core Plus Bond ETF (MFSB) and T. Rowe Price QM U.S. Bond ETF (TAGG) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. MFSB is more expensive with a Total Expense Ratio (TER) of 0.34%, versus 0.08% for TAGG. MFSB is down -0.68% year-to-date (YTD) with +$427M in YTD flows. TAGG performs worse with -1.3% YTD performance, and +$1.17B in YTD flows. Run a side-by-side ETF comparison of MFSB and TAGG 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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MFSB vs TAGG performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MFSB TAGG | -1.10%-1.07% | -1.66%-1.82% | -0.68%-1.30% | +0.01%-0.49% | n/a+13.09% | n/an/a |
| Flows | MFSB TAGG | +$39M+$257M | +$133M+$740M | +$427M+$1.17B | +$503M+$1.24B | -+$2.57B | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MFSB TAGG | +3.48%+3.81% | +3.32%+3.65% | n/a+5.08% | n/an/a |
| Max drawdown | MFSB TAGG | -2.16%-2.40% | -2.56%-3.05% | n/a-4.87% | n/an/a |
| Max drawdown duration | MFSB TAGG | 77d74d | 197d194d | n/a284d | n/an/a |
Trading data
MFSB | TAGG | |
Last sale 9/15/2026 at 1:30 PM | $24.23 | $41.22 |
| Previous close 09/14/2026 | $24.27 | $41.26 |
| Consolidated volume 09/14/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/15/2026 at 1:30 PM
Live
Closed
MFSB | TAGG | |
|---|---|---|
| Last price | $24.23 | $41.22 |
| 1D performance | -0.16% | -0.10% |
| AuM | $568.93 M | $2.61 B |
| E/R | 0.34% | 0.08% |
Characteristics
MFSB | TAGG | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | MFS | T. Rowe Price |
| Benchmark | - | - |
| N° of holdings | 236 | 1271 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | December 4, 2024 | September 28, 2021 |
| ESG | No | No |
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Exposure
Countries
MFSB
USA
57.02%
Other
42.98%
TAGG
USA
63.44%
Other
36.56%
Sectors
MFSB
Sovereign
26.57%
Finance
20.22%
Industrials
8.04%
Other
45.17%
TAGG
Sovereign
31.46%
Finance
12.6%
Industrials
9.49%
Other
46.44%
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Diversification
MFSB
Total weight of top 15 holdings out of 15
27.06%
TAGG
Total weight of top 15 holdings out of 15
20.87%
Top 15 holdings
Data as of July 31, 2026
MFSB
USA, Bonds 4.625% 15nov2045, USD
8.86%
USA, Bonds 4.625% 15nov2055, USD
4.10%
USA, Notes 3.875% 31jul2030, USD (AB-2030)
4.06%
USA, Notes 4.125% 31oct2029, USD (AF-2029)
2.59%
USA, Bonds 4.625% 15nov2044, USD
0.96%
USA, Bonds 4.875% 15aug2045, USD
0.93%
USA, Bonds 4.5% 15nov2054, USD
0.92%
Boston Properties LP, 5.75% 15jan2035, USD
0.69%
Bank of America Corporation, 5.744% 12feb2036, USD (N)
0.64%
US01F0306864
0.59%
US12570XAQ51
0.57%
USA, Bonds 4.25% 15feb2054, USD
0.56%
Highwoods Realty, 5.35% 15jan2033, USD
0.54%
Boeing, 6.528% 1may2034, USD
0.53%
JP Morgan, 4.946% 22oct2035, USD
0.52%
TAGG
USA, Notes 3.5% 15dec2028, USD (AV-2028)
2.11%
USA, Notes 4% 28feb2030, USD (H-2030)
1.92%
USA, Bonds 4.625% 15nov2044, USD
1.75%
USA, Bonds 4.5% 15nov2054, USD
1.70%
USA, Bonds 4.625% 15feb2046, USD
1.65%
USA, Notes 3.875% 15mar2028, USD (AL-2028)
1.64%
USA, Notes 4.25% 31jan2030, USD (U-2030)
1.60%
USA, Bonds 4.875% 15aug2045, USD
1.35%
USA, Notes 3.5% 30nov2030, USD (AG-2030)
1.26%
USA, Bonds 4.75% 15feb2056, USD
1.20%
USA, Notes 3.875% 15may2029, USD (AN-2029)
1.06%
USA, Notes 3.875% 30apr2031, USD (Y-2031)
1.03%
USA, Bonds 4.75% 15feb2045, USD
0.94%
USA, Notes 3.625% 31aug2030, USD (AC-2030)
0.90%
USA, Notes 4% 31mar2030, USD (W-2030)
0.77%
Frequently asked questions about MFSB and TAGG
How have the MFSB and TAGG ETFs performed in 2026?
As of September 14, 2026, MFSB is down -0.68% year-to-date (YTD), while TAGG has lost -1.3%. That puts MFSB better performer ahead so far this year.
Which ETF is attracting more investor money: MFSB or TAGG?
Year-to-date, the MFSB ETF saw +$427M in flows, compared to +$1.17B for TAGG.
Which ETF is more volatile: MFSB or TAGG?
Over the past year, MFSB had a volatility of 3.32%, while TAGG experienced 3.65%.
Which ETF is bigger: MFSB or TAGG?
As of September 14, 2026, MFSB holds $568.93 M in assets under management (AUM), while TAGG manages $2.61 B.
What sectors do the MFSB and TAGG ETFs invest in?
MFSB leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, TAGG focuses on Sovereign, Finance and Industrials.
What are the top holdings of the MFSB ETF and TAGG ETF?
MFSB top holdings include USA, Bonds 4.625% 15nov2045, USD, USA, Bonds 4.625% 15nov2055, USD and USA, Notes 3.875% 31jul2030, USD (AB-2030). TAGG holds in its top three: USA, Notes 3.5% 15dec2028, USD (AV-2028), USA, Notes 4% 28feb2030, USD (H-2030) and USA, Bonds 4.625% 15nov2044, USD.
Which ETF is more diversified: MFSB or TAGG?
MFSB holds 457 securities with 27.06% of its assets in the top 15. TAGG has 1813 securities and a top 15 weight of 20.87%.
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Latest news about MFSB & TAGG
What's the Fund | MFS Active Core Plus Bond ETF (MFSB)
July 25, 2025
MFSB
The Cheapest NYSE Listed Actively Managed Equity and Fixed Income ETFs of 2023
October 25, 2023
TAGG
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