Which returned more over the last year, JMTG or MBB?

In the year to Oct 9, 2026, with distributions reinvested, JMTG returned −0.8% and MBB −1.2%.

Which is cheaper, JMTG or MBB?

MBB is cheaper, by 0.20 percentage points a year. That is about $20 on $10,000 held for a year. Fees come from each fund's prospectus.

Share on X Download as PDF

Compare their flows Ask IQ about these two funds

JMTG vs MBB: Differences, Returns & Fees

On May 31, 2026 JMTG's duration was 5.6 years and MBB's 5.4; MBB charges 0.04% to JMTG's 0.24%. Net assets on Oct 9, 2026: $6.7bn for JPMorgan Mortgage-Backed Securities ETF and $35.6bn for iShares MBS ETF.

MBB costs 0.20 points a year less; their one-year returns differ by 0.4 points; MBB is 5.3 times larger.

	JMTG	MBB
Expense ratio	0.24%	0.04%
Net assets	$6.7bn	$35.6bn
Total return, 1 year	−0.8%	−1.2%
What it tracks	No index, actively managed	Bloomberg U.S. MBS Index
Holdings in common	1%
Below its high	4.3%, high on Feb 27, 2026	4.6%, high on Feb 27, 2026

Holdings in common uses holdings dated May 31, 2026.

−0.8%

JMTG total return, 1 year

−1.2%

MBB total return, 1 year

0.24%

JMTG expense ratio

0.04%

MBB expense ratio

What they hold in common

By the books each fund has filed, JMTG and MBB hold 1% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026.

50%

half

1% in common

Positions both hold, largest shared weight first

Holding JMTG MBB

FNMA/FHLMC UMBS, Single Family, 30 Year, due Jun 25, 2056 2.17% 0.64%

GNMA II, 30 Year, due Oct 20, 2052 0.26% 0.12%

FNMA UMBS, 30 Year, due Nov 1, 2051 0.09% 0.09%

FNMA UMBS, 30 Year, due Mar 1, 2052 0.16% 0.06%

FNMA UMBS, 30 Year, due Feb 1, 2052 0.10% 0.04%

FNMA/FHLMC UMBS, Single Family, 30 Year, due Jun 25, 2056 1.28% 0.03%

FNMA UMBS, 30 Year, due Jul 1, 2051 0.20% 0.03%

GNMA II, 30 Year, due Jul 20, 2052 0.09% 0.03%

GNMA II, 30 Year, due Oct 20, 2052 0.14% 0.02%

FNMA UMBS, 30 Year, due Jun 1, 2050 0.05% 0.02%

GNMA II, 30 Year, due Jan 20, 2054 0.04% 0.01%

GNMA II, 30 Year, due Mar 20, 2053 0.01% 0.01%

Only in JMTG

U.S. Treasury Bonds, due Aug 15, 2043 1.19%

FNMA UMBS, 30 Year, due Oct 1, 2051 0.66%

FNMA ACES, Series 2026-M10, Class A2, due Jul 25, 2035 0.59%

U.S. Treasury Bonds, due May 15, 2040 0.57%

FNMA ACES, Series 2022-M4, Class 2A2, due Dec 25, 2030 0.53%

FNMA UMBS, 30 Year, due Aug 1, 2050 0.50%

U.S. Treasury Notes, due Feb 15, 2036 0.49%

FNMA ACES, Series 2026-M9, Class A2, due Jan 25, 2033 0.45%

Only in MBB

Freddie Mac Pool, due May 1, 2051 1.05%

Ginnie Mae, due Jun 20, 2056 0.95%

Uniform Mortgage-Backed Security, TBA, due Jun 1, 2056 0.83%

Ginnie Mae, due Jun 20, 2056 0.67%

Ginnie Mae II Pool, due Nov 20, 2054 0.55%

Ginnie Mae II Pool, due Oct 20, 2051 0.54%

Ginnie Mae II Pool, due Dec 20, 2051 0.53%

Fannie Mae Pool, due Dec 1, 2051 0.52%

Check overlap with more funds →

On the same fields

JMTG

JPMorgan Mortgage-Backed Securities ETF

MBB

iShares MBS ETF

Where it sits Bond ETF Bond ETF

Issuer JPMorgan iShares

What it is Actively managed Tracks an index of mortgage-backed securities

Total return, 1 year −0.8% −1.2%

S&P 500 over the same days +17.3% +17.3%

Gap to the S&P 500 −18.1 pts −18.5 pts

Expense ratio 0.24% 0.04%

Holdings 2578 10855

Net assets $6.7bn $35.6bn

JMTG and MBB on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

JMTG in plain words

JMTG is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned −0.8% with distributions reinvested, against −1.2% for its benchmark, the Bloomberg U.S. MBS Index. The prospectus expense ratio is 0.24% a year. It sat 4.3% below its high of Feb 27, 2026 on Oct 9, 2026.

MBB in plain words

MBB tracks an index of mortgage-backed securities. The prospectus expense ratio is 0.04% a year. It sat 4.6% below its high of Feb 27, 2026 on Oct 9, 2026.

Over the year to Oct 9, 2026 it returned −1.2% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg U.S. MBS Index.

Questions people ask

Which returned more over the last year, JMTG or MBB?: In the year to Oct 9, 2026, with distributions reinvested, JMTG returned −0.8% and MBB −1.2%.
Which is cheaper, JMTG or MBB?: MBB is cheaper, by 0.20 percentage points a year. That is about $20 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

JMTG vs PMBS JMTG vs VMBS JMTG vs SPMB JMTG vs SMBS MBB vs SMBS FSEC vs MBB MBB vs VMBS MBB vs PMBS

JMTG on its own →MBB on its own →Hold both: look the portfolio through →Rankings →Standards and sources →

Where these figures came from

JMTG filings on SEC EDGAR ↗JMTG prospectus with the expense ratio (SEC) ↗JPMorgan website ↗MBB filings on SEC EDGAR ↗MBB prospectus with the expense ratio (SEC) ↗iShares page for MBB ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. 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, JMTG against MBB, data as of Oct 9, 2026. https://etfiq.com/compare/any/jmtg-vs-mbb

Open data

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