Data as of Oct 28, 2026.

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GLD vs MBB: Differences, Returns & Fees

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GLD is a commodity fund and MBB a bond index fund, and over the year to Oct 28, 2026, GLD returned +2.5% against −0.8%.

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Net assets: $135.8bn on Oct 27, 2026 for SPDR Gold Shares, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.

At a glance
+2.5%
GLD total return, 1 year
−0.8%
MBB total return, 1 year
0.40%
GLD expense ratio
0.04%
MBB expense ratio

Pair scorecard

MBB costs 0.36 points a year less; their one-year returns differ by 3.3 points; GLD is 3.8 times larger.

GLD vs MBB: Differences, Returns & Fees
MeasureGLDMBB
Return
Total return, 1 year+2.5%−0.8%
Drawdown
Below its high24.7%, high on Jan 29, 2026
Benchmark
What it tracksGoldBloomberg U.S. MBS Index
Cost and size
Expense ratio0.40%0.04%
Net assets, as of Oct 26, 2026$134.6bn$35.6bn
Holdings
Holdings in commonnot published

Method

Side by side

GLD SPDR Gold Shares MBB iShares MBS ETF
Where it sits Commodity ETF Bond ETF
What it is Holds gold Tracks an index of mortgage-backed securities
Total return, 1 year +2.5% −0.8%
Its benchmark over the same days +2.7% (IAU) −1.1% (SPMB)
Gap to its benchmark −0.2 pts vs IAU +0.3 pts vs SPMB
Expense ratio 0.40% 0.04%
Holdings not counted 10813
Net assets, GLD as of Oct 27, 2026 and MBB as of Oct 28, 2026 $135.8bn $35.5bn

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

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About each fund
GLD

Its expense ratio is 0.40% a year, for the three months to Jun 30, 2026, as its 10-Q states.

GLD holds gold. Over the year to Oct 28, 2026 it returned +2.5% with distributions reinvested, against +2.7% for its benchmark, the price of gold. It sat 24.7% below its high of Jan 29, 2026 on Oct 28, 2026.

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.

Questions people ask

Which returned more over the last year, GLD or MBB?
In the year to Oct 28, 2026, with distributions reinvested, GLD returned +2.5% and MBB −0.8%.
Which is cheaper, GLD or MBB?
MBB is cheaper, by 0.36 percentage points a year. That is about $36 on $10,000 held for a year. Fees come from each fund's own filings.
Other comparisons
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ETFIQ, GLD against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/gld-vs-mbb

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