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Data as of Oct 28, 2026.

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MBB vs VCLT: Differences, Returns & Fees

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MBB's duration was 5.7 years on Aug 31, 2026 and VCLT's 12.0 on May 31, 2026; VCLT charges 0.03% to MBB's 0.04%.

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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $7.5bn on Sep 30, 2026 for Vanguard Long-Term Corporate Bond ETF.

MBB on its own →VCLT on its own →
At a glance
−0.8%
MBB total return, 1 year
−5.9%
VCLT total return, 1 year
0.04%
MBB expense ratio
0.03%
VCLT expense ratio

Pair scorecard

VCLT costs 0.01 points a year less; their one-year returns differ by 5.1 points; MBB is 4.8 times larger.

MBB vs VCLT: Differences, Returns & Fees
MeasureMBBVCLT
Return
Total return, 1 year−0.8%−5.9%
Drawdown
Below its high17.8%, high on Sep 22, 2021
Benchmark
What it tracksBloomberg U.S. MBS IndexBloomberg U.S. 10+ Year Corporate Bond Index
Cost and size
Expense ratio0.04%0.03%
Net assets, as of Sep 30, 2026$36.2bn$7.5bn
Holdings
Holdings in common0%

Holdings in common uses holdings dated May 31, 2026 and Aug 31, 2026. Method

What they share

0%

By the books each fund has filed, MBB and VCLT hold 0% of their money in the same securities at the same weight. Holdings dated May 31, 2026 and Aug 31, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB VCLT
Only in one fund ↓
Only in MBB
Ginnie Mae, due Sep 1, 2056 1.05%
Freddie Mac Pool, due May 1, 2051 0.98%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.85%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.70%
Ginnie Mae, due Sep 1, 2056 0.53%
Ginnie Mae II Pool, due Nov 20, 2054 0.51%
Ginnie Mae II Pool, due Oct 20, 2051 0.51%
Ginnie Mae II Pool, due Dec 20, 2051 0.50%
Only in VCLT
ANHEUSER-BUSCH, due Feb 1, 2046 0.37%
CVS HEALTH CORP, due Mar 25, 2048 0.33%
META PLATFORMS, due Nov 15, 2055 0.28%
BOEING CO, due May 1, 2050 0.27%
PFIZER INVSTMNT, due May 19, 2053 0.27%
AMAZON.COM INC, due Mar 13, 2056 0.26%
ORACLE CORP, due Feb 4, 2056 0.24%
AT&T INC, due Sep 15, 2053 0.23%
Check overlap with more funds →

Side by side

MBB iShares MBS ETF VCLT Vanguard Long-Term Corporate Bond ETF
Where it sits Bond ETF Bond ETF
Issuer iShares Vanguard
What it is Tracks an index of mortgage-backed securities Tracks an index of Long-Term Corporate Bond
Total return, 1 year −0.8% −5.9%
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% 0.03%
Holdings 10813 2562
Net assets, MBB as of Oct 28, 2026 and VCLT as of Sep 30, 2026 $35.5bn $7.5bn

MBB and VCLT 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.

VCLT

VCLT tracks an index of Long-Term Corporate Bond. Over the year to Oct 28, 2026 it returned −5.9% with distributions reinvested. The prospectus expense ratio is 0.03% a year. It sat 17.8% below its high of Sep 22, 2021 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, MBB or VCLT?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and VCLT −5.9%.
Which is cheaper, MBB or VCLT?
VCLT is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
BOND vs MBBMBB vs SPSBMBB vs PFFEMB vs MBBBINC vs VCLTSCHP vs VCLTTIP vs VCLTBOXX vs VCLT
Where to next
MBB on its own →VCLT on its own →Hold both: look the portfolio through →Rankings →MBB dividend history →MBB holdings →VCLT dividend history →VCLT holdings →Standards and sources →
Sources and dates
MBB filings on SEC EDGAR ↗
MBB prospectus with the expense ratio (SEC) ↗
iShares page for MBB ↗
VCLT filings on SEC EDGAR ↗
VCLT prospectus with the expense ratio (SEC) ↗
Vanguard page for VCLT ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, MBB against VCLT, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-vclt

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.