Data as of Oct 28, 2026.

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MBB vs VT: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MBB returned −0.8% to VT's +13.5%; 0% of their weight is in the same names.

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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $81.8bn on Sep 30, 2026 for Vanguard Total World Stock Index ETF.

At a glance
−0.8%
MBB total return, 1 year
+13.5%
VT total return, 1 year
0.04%
MBB expense ratio
0.06%
VT expense ratio

Pair scorecard

MBB costs 0.02 points a year less; their one-year returns differ by 14.3 points; VT is 2.3 times larger.

MBB vs VT: Differences, Returns & Fees
MeasureMBBVT
Return
Total return, 1 year−0.8%+13.5%
Benchmark
What it tracksBloomberg U.S. MBS IndexFTSE Global All Cap Index
Cost and size
Expense ratio0.04%0.06%
Net assets, as of Sep 30, 2026$36.2bn$81.8bn
Holdings
Holdings in common0%
In the S&P 500, by weight55%
Top ten holdings, share of the fund22.5%

Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method

What they share

0%

By the books each fund has filed, MBB and VT hold 0% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB VT
Only in one fund ↓
Only in MBB
BLACKROCK CASH CL INST SL AGENCY 5.45%
FHLMC 30YR UMBS SUPER 1.05%
UMBS 30YR TBA(REG A) 0.60%
GNMA2 30YR 0.59%
GNMA2 30YR 0.54%
FNMA 30YR UMBS 0.53%
GNMA2 30YR 0.53%
GNMA2 30YR 0.52%
Only in VT
NVIDIA Corp 4.54%
Apple Inc 4.11%
Microsoft Corp 3.25%
Amazon.com Inc 2.06%
Alphabet Inc 1.73%
Taiwan Semiconductor Manufacturing Co Ltd 1.62%
Broadcom Inc 1.39%
Meta Platforms Inc 1.36%
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Side by side

MBB iShares MBS ETF VT Vanguard Total World Stock Index ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of mortgage-backed securities Tracks an index of Total World Stock
Total return, 1 year −0.8% +13.5%
Its benchmark over the same days −1.1% (SPMB) not measured
Gap to its benchmark +0.3 pts vs SPMB not measured
Expense ratio 0.04% 0.06%
Holdings 10813 10194
Net assets, MBB as of Oct 28, 2026 and VT as of Sep 30, 2026 $35.5bn $81.8bn

MBB and VT on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
MBB

MBB tracks an index of mortgage-backed securities. Over the year to Oct 28, 2026 it returned −0.8% with distributions reinvested, against −1.1% for its benchmark, the Bloomberg U.S. MBS Index. The prospectus expense ratio is 0.04% a year.

VT

VT tracks an index of Total World Stock. Over the year to Oct 28, 2026 it returned +13.5% with distributions reinvested. The prospectus expense ratio is 0.06% a year. By its holdings published by its issuer as of Sep 30, 2026, 55% of the fund by weight is stocks the S&P 500 also holds, across 10,194 positions, with the top ten at 22.5%.

Questions people ask

Which returned more over the last year, MBB or VT?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and VT +13.5%.
Which is cheaper, MBB or VT?
MBB is cheaper, by 0.02 percentage points a year. That is about $2 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MBB against VT, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-vt

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