Data as of Oct 28, 2026.

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MBB vs SDY: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MBB returned −0.8% to SDY's +16.5%; 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 $21.9bn on Oct 27, 2026 for State Street SPDR S&P Dividend ETF.

At a glance
−0.8%
MBB total return, 1 year
+16.5%
SDY total return, 1 year
0.04%
MBB expense ratio
0.35%
SDY expense ratio

Pair scorecard

MBB costs 0.31 points a year less; their one-year returns differ by 17.3 points; MBB is 1.6 times larger.

MBB vs SDY: Differences, Returns & Fees
MeasureMBBSDY
Return
Total return, 1 year−0.8%+16.5%
Benchmark
What it tracksBloomberg U.S. MBS IndexS&P High Yield Dividend Aristocrats Index
Cost and size
Expense ratio0.04%0.35%
Net assets, as of Oct 26, 2026$35.6bn$22.0bn
Holdings
Holdings in common0%
In the S&P 500, by weight84%
Top ten holdings, share of the fund20.4%

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

What they share

0%

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

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB SDY
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 SDY
ACCENTURE PLC CL A 3.73%
VERIZON COMMUNICATIONS INC 2.81%
CHEVRON CORP 2.15%
REALTY INCOME CORP 1.94%
PEPSICO INC 1.82%
MEDTRONIC PLC 1.79%
TARGET CORP 1.59%
AUTOMATIC DATA PROCESSING 1.55%
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Side by side

MBB iShares MBS ETF SDY State Street SPDR S&P Dividend ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of mortgage-backed securities Tracks the S&P Dividend
Total return, 1 year −0.8% +16.5%
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% 0.35%
Holdings 10813 156
Net assets, MBB as of Oct 28, 2026 and SDY as of Oct 27, 2026 $35.5bn $21.9bn

MBB and SDY 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.

SDY

SDY tracks the S&P Dividend. Over the year to Oct 28, 2026 it returned +16.5% with distributions reinvested. The prospectus expense ratio is 0.35% a year. By its holdings published by its issuer for Oct 27, 2026, 84% of the fund by weight is stocks the S&P 500 also holds, across 156 positions, with the top ten at 20.4%.

Questions people ask

Which returned more over the last year, MBB or SDY?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and SDY +16.5%.
Which is cheaper, MBB or SDY?
MBB is cheaper, by 0.31 percentage points a year. That is about $31 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MBB against SDY, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-sdy

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