MFSBvsVCOBETF Comparison
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MFS Active Core Plus Bond ETF (MFSB) belongs to the US Aggregate Bonds segment. Voya Core Bond ETF (VCOB) is part of the Intl IG Bonds segment. MFSB's top 3 sector exposures are Sovereign, Finance and Industrials. In contrast, VCOB's top sector exposures are Sovereign, Industrials and Finance. MFSB is more expensive with a Total Expense Ratio (TER) of 0.34%, versus 0.25% for VCOB. MFSB is down -0.79% year-to-date (YTD) with +$431M in YTD flows. VCOB performs worse with -2.46% YTD performance, and -$12M in YTD flows. Run a side-by-side ETF comparison of MFSB and VCOB 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 VCOB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MFSB VCOB | -0.97%-1.25% | -1.77%-2.02% | -0.79%-2.46% | -0.10%n/a | n/an/a | n/an/a |
| Flows | MFSB VCOB | +$43M- | +$137M+$3M | +$431M-$12M | +$507M- | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MFSB VCOB | +3.45%+3.72% | +3.32%n/a | n/an/a | n/an/a |
| Max drawdown | MFSB VCOB | -2.27%-2.56% | -2.57%n/a | n/an/a | n/an/a |
| Max drawdown duration | MFSB VCOB | 78d79d | 198dn/a | n/an/a | n/an/a |
Trading data
MFSB | VCOB | |
Last sale 9/15/2026 at 1:30 PM | $24.23 | $48.08 |
| Previous close 09/15/2026 | $24.27 | $48.16 |
| Consolidated volume 09/15/2026 | ||
| 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 | VCOB | |
|---|---|---|
| Last price | $24.23 | $48.08 |
| 1D performance | -0.16% | -0.17% |
| AuM | $572.53 M | $95.19 M |
| E/R | 0.34% | 0.25% |
Characteristics
MFSB | VCOB | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | MFS | Voya Investment Management |
| Benchmark | - | - |
| N° of holdings | 236 | 876 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | December 4, 2024 | November 19, 2025 |
| ESG | No | No |
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Exposure
Countries
MFSB
USA
57.02%
Other
42.98%
VCOB
USA
63.3%
Other
36.7%
Sectors
MFSB
Sovereign
26.57%
Finance
20.22%
Industrials
8.04%
Other
45.17%
VCOB
Sovereign
18.21%
Industrials
16.06%
Finance
11.87%
Other
53.86%
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Diversification
MFSB
Total weight of top 15 holdings out of 15
27.06%
VCOB
Total weight of top 15 holdings out of 15
32.4%
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%
VCOB
USA, Notes 4.375% 31jul2031, USD (AB-2031)
4.48%
USA, Bonds 5% 15may2046, USD
3.29%
USA, Notes 4.125% 15jul2029, USD (AQ-2029)
3.26%
USA, Notes 4.125% 30jun2031, USD (AA-2031)
3.18%
US3140XLTG36
1.93%
US3140XR5W18
1.91%
FN MA5759, 5% 1jul2055, USD (ABS)
1.86%
FN MA5877, 4.5% 1nov2055, USD (ABS)
1.81%
FR RQ0056, 5.5% 1oct2055, USD (ABS)
1.80%
G2 MA7471, 2% 20jul2051, USD (ABS)
1.78%
FR RQ0028, 6% 1jul2055, USD (ABS)
1.52%
US01F0406854
1.49%
USA, Notes 4.375% 31jul2033, USD (N-2033)
1.48%
US01F0326821
1.46%
US3140W3EM72
1.17%
Frequently asked questions about MFSB and VCOB
How have the MFSB and VCOB ETFs performed in 2026?
As of September 15, 2026, MFSB is down -0.79% year-to-date (YTD), while VCOB has lost -2.46%. That puts MFSB better performer ahead so far this year.
Which ETF is attracting more investor money: MFSB or VCOB?
Year-to-date, the MFSB ETF saw +$431M in flows, compared to -$12M for VCOB.
Which ETF is bigger: MFSB or VCOB?
As of September 15, 2026, MFSB holds $572.53 M in assets under management (AUM), while VCOB manages $95.19 M.
What sectors do the MFSB and VCOB ETFs invest in?
MFSB leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, VCOB focuses on Sovereign, Industrials and Finance.
What are the top holdings of the MFSB ETF and VCOB 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). VCOB holds in its top three: USA, Notes 4.375% 31jul2031, USD (AB-2031), USA, Bonds 5% 15may2046, USD and USA, Notes 4.125% 15jul2029, USD (AQ-2029).
Which ETF is more diversified: MFSB or VCOB?
MFSB holds 457 securities with 27.06% of its assets in the top 15. VCOB has 936 securities and a top 15 weight of 32.4%.
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Latest news about MFSB & VCOB
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