VUSBvsMFSBETF Comparison
VS
Vanguard Ultra-Short Bond ETF (VUSB) belongs to the Intl IG Bonds segment. MFS Active Core Plus Bond ETF (MFSB) is part of the US Aggregate Bonds segment. VUSB's top 3 sector exposures are Finance, Industrials and Utilities. In contrast, MFSB's top sector exposures are Sovereign, Finance and Industrials. VUSB is less expensive with a Total Expense Ratio (TER) of 0.1%, versus 0.34% for MFSB. VUSB is up 0.14% year-to-date (YTD) with +$3.32B in YTD flows. MFSB performs worse with -0.52% YTD performance, and +$425M in YTD flows. Run a side-by-side ETF comparison of VUSB 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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VUSB vs MFSB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VUSB MFSB | +0.11%-0.75% | +0.38%-0.94% | +0.14%-0.52% | +0.77%+0.45% | +12.68%n/a | +15.47%n/a |
| Flows | VUSB MFSB | +$62M+$41M | +$1.12B+$134M | +$3.32B+$425M | +$4.32B+$501M | +$5.95B- | +$8.43B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VUSB MFSB | +0.98%+3.60% | +1.16%+3.33% | +0.91%n/a | +0.91%n/a |
| Max drawdown | VUSB MFSB | -0.38%-2.01% | -0.84%-2.56% | -0.84%n/a | -1.79%n/a |
| Max drawdown duration | VUSB MFSB | 35d73d | 222d193d | 222dn/a | 504dn/a |
Trading data
VUSB | MFSB | |
Last sale 9/14/2026 at 1:30 PM | $49.55 | $24.27 |
| Previous close 09/11/2026 | $49.55 | $24.29 |
| Consolidated volume 09/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 9/14/2026 at 1:30 PM
Live
Closed
VUSB | MFSB | |
|---|---|---|
| Last price | $49.55 | $24.27 |
| 1D performance | +0.00% | -0.08% |
| AuM | $10.01 B | $568.00 M |
| E/R | 0.1% | 0.34% |
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Exposure
Countries
VUSB
USA
51.98%
Other
48.02%
MFSB
USA
57.02%
Other
42.98%
Sectors
VUSB
Finance
41.94%
Industrials
7.57%
Other
50.49%
MFSB
Sovereign
26.57%
Finance
20.22%
Industrials
8.04%
Other
45.17%
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Diversification
VUSB
Total weight of top 15 holdings out of 15
7.05%
MFSB
Total weight of top 15 holdings out of 15
27.06%
Top 15 holdings
Data as of July 31, 2026
VUSB
USA, Notes 4.125% 15nov2027, USD (AU-2027)
0.84%
PNC Financial Services Group, 4.618% 26oct2029, USD
0.59%
Regions Bank, 4.755% 27jul2029, USD
0.52%
U.S. Bancorp, 5.775% 12jun2029, USD (CC)
0.51%
Charles Schwab, 4.603% 27jul2029, USD
0.50%
Truist Bank, 4.42% 24jul2028, USD (I)
0.45%
US96043GAG64
0.45%
US23346MAC01
0.44%
UBS Group, FRN 10apr2030, USD (164)
0.42%
Hyundai Auto Lease Securitization Trust 2026-C, 4.68% 16jul2029, USD (ABS, A3)
0.41%
Bank of Montreal, FRN 22sep2028, USD
0.41%
National Bank of Canada, 4.166% 20jan2029, USD
0.39%
Toyota Motor Credit, FRN 5sep2028, USD (B)
0.38%
Bank of America Corporation, 5.202% 25apr2029, USD (N)
0.37%
US69335PFJ93
0.37%
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%
Frequently asked questions about VUSB and MFSB
How have the VUSB and MFSB ETFs performed in 2026?
As of September 11, 2026, VUSB is up 0.14% year-to-date (YTD), while MFSB has lost -0.52%. That puts VUSB better performer ahead so far this year.
Which ETF is attracting more investor money: VUSB or MFSB?
Year-to-date, the VUSB ETF saw +$3.32B in flows, compared to +$425M for MFSB.
Which ETF is more volatile: VUSB or MFSB?
Over the past year, VUSB had a volatility of 1.16%, while MFSB experienced 3.33%.
Which ETF is bigger: VUSB or MFSB?
As of September 11, 2026, VUSB holds $10.01 B in assets under management (AUM), while MFSB manages $568.00 M.
What sectors do the VUSB and MFSB ETFs invest in?
VUSB leans toward sectors like Finance and Industrials. Meanwhile, MFSB focuses on Sovereign, Finance and Industrials.
What are the top holdings of the VUSB ETF and MFSB ETF?
VUSB top holdings include USA, Notes 4.125% 15nov2027, USD (AU-2027), PNC Financial Services Group, 4.618% 26oct2029, USD and Regions Bank, 4.755% 27jul2029, USD. MFSB holds in its top three: USA, Bonds 4.625% 15nov2045, USD, USA, Bonds 4.625% 15nov2055, USD and USA, Notes 3.875% 31jul2030, USD (AB-2030).
Which ETF is more diversified: VUSB or MFSB?
VUSB holds 1314 securities with 7.05% of its assets in the top 15. MFSB has 457 securities and a top 15 weight of 27.06%.
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Latest news about VUSB & MFSB
What's the Fund | MFS Active Core Plus Bond ETF (MFSB)
July 25, 2025
MFSB
Notable ETF Filings and Launches Recap: August 2024
August 29, 2024
VUSB
Notable ETF Filings Recap: May 2024
June 4, 2024
VUSB
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