iShares MBS ETFMBB

iSharesBonds & CashMortgage#462 of 785 by YTD

$91.97

+0.5% last session

+0.2% YTD

Data as of 11/4/20264:00 PM ET · End-of-day

Dividend-adjusted total return · S&P 500 uses VOO · Oct 30, 2023 – Nov 4, 2026MBBS&P 500 · VOO

Returns	1D	1M	3M	YTD	1Y	3Y	5Y	MAX
Total return	+0.5%	+3.3%	0.0%	+0.2%	+1.0%	+20.8%	+1.4%	+65.1%
Peer average	+0.9%	+2.4%	−2.6%	−2.6%	−1.2%	+19.8%	−6.6%	—
S&P 500 · VOO	+1.6%	−1.6%	0.0%	+13.4%	+13.5%	+91.7%	+81.2%	—

Key Statistics

Open all fund facts →

AUM: $35.7B
Expense ratio: 0.04%
Distribution yield: 4.4%
NAV: $91.59
Volume: 4.2M
Avg. volume 30D: 6.1M
High today: $92.09
Low today: $91.55
Previous close: $91.53
52-week high: $96.97
52-week low: $88.58
Our risk indicator: 2/5

MBB in One Breath

MBB Among Mortgage ETFs

YTD

#1MBSFRegan+2.9%$265M

#2MBSXRegan+1.1%$18.5M

#3EVMOEaton Vance+0.7%$804M

#4JMTGJ.P. Morgan+0.2%$6.8B

#5VMBSVanguard+0.2%$15.5B

#6MBBiShares+0.2%$35.7B

#7FSECFidelity+0.1%$4.5B

#8SMBSSchwab+0.1%$6.4B

#9MBSDFlexShares0.0%$88.8M

End-of-day Nov 5, 2026 · 21 Mortgage ETFs by YTD

$10,000 in MBB

$10,000 in MBB became

$10,143

In the S&P 500 (VOO)

$18,115

Total return, dividends in · Oct 27, 2021 – Nov 4, 2026 · S&P 500 uses VOO

MBB’s Top Holdings

Today

BLACKROCK CASHBlackrock Cash Cl Inst Sl Agency5.5%FHLMC 30YR U1.1%UMBS 30YR TB0.8%GNMA2 30YR T0.7%FNMA 30YR UM0.7%GNMA2 30YR 50.6%GNMA2 30YR 20.5%GNMA2 30YR 20.5%FNMA 30YR UM0.5%GNMA2 30YR 20.5%FHLMC 30YR U0.5%GNMA2 30YR T0.5%FNMA 30YR UM0.4%GNMA2 30YR 50.4%GNMA2 30YR 50.4%GNMA2 30YR 50.4%UMBS 30YR TB0.4%GNMA2 30YR 20.4%GNMA2 30YR T0.3%FNMA 30YR UM0.3%GNMA2 30YR 20.3%GNMA2 30YR 50.3%

iShares MBB · 10,825 holdings · top 22 shown · tile size = share of the fund · as of Nov 4, 2026

What MBB Holds

Today

All holdings100.0%

BLACKROCK 5.5 · FHLMC 30YR 1.1 · UMBS 30YR · GNMA2 30YR · FNMA 30YR · GNMA2 30YR · GNMA2 30YR

iShares MBB · share of the fund · as of Nov 4, 2026

Blackrock’s Share of MBB

Today

5.5%

$55 of every $1,000 in MBB is Blackrock

Blackrock held by MBB

$1.9B

iShares MBB · each square = $10 of $1,000 · as of Nov 4, 2026

MBB’s Share of Mortgage ETFs

Today

40.2%

of the $88.9B in 25 Mortgage ETFs

MBB$35.7B40.2%

VMBS$15.5B17.4%

SPMB$7.0B7.9%

22 others$30.7B34.5%

Mortgage ETF AUM · Nov 5, 2026

MBB Fee per $100 vs Peers

Today

$0.04a year
per $100

$4 a year on $10,000

VMBS$0.03

SMBS$0.03

MBB$0.04

SPMB$0.04

JMBS$0.21

JMTG$0.37

Expense ratio · Mortgage peers · Nov 5, 2026

Inside MBB

10,825 holdings · as of Nov 4, 2026

MBB

iShares MBS ETF

Today

All holdings100.0%Blackrock 5.5%10,811 more holdings86.8% of the fund

All holdings100.0%10,819 more holdings90.8% of the fund

#	Ticker	Company	Weight ▼
1	—	Blackrock Cash CL Inst SL Agency	5.45%
2	—	Fhlmc 30yr Umbs Super 2.00% 05/01/2051	1.05%
3	—	Umbs 30yr Tba(reg A) 5.50% 11/12/2026	0.76%
4	—	Gnma2 30yr TBA 6.00% 11/19/2026	0.70%
5	—	Fnma 30yr Umbs 5.50% 09/01/2056	0.69%
6	—	Gnma2 30yr 5.00% 11/20/2054	0.59%
7	—	Gnma2 30yr 2.00% 10/20/2051	0.54%
8	—	Gnma2 30yr 2.00% 12/20/2051	0.53%
9	—	Fnma 30yr Umbs 2.00% 12/01/2051	0.53%
10	—	Gnma2 30yr 2.50% 07/20/2051	0.52%

iShares MBB · current holdings by weight · as of Nov 4, 2026 · each tile is one holding · top 20 = 15.4%

How It Compares

MBB

iShares MBS ETF’s Peers

YTD


MBB	iSharesThis fundRead Desk	0.04%	+0.2%	+1.0%	$35.7B
VMBS	VanguardRead Desk	0.03%	+0.2%	+1.1%	$15.5B
SPMB	SPDRRead Desk	0.04%	−0.1%	+0.7%	$7.0B
JMTG	J.P. MorganRead Desk	0.37%	+0.2%	+0.9%	$6.8B
SMBS	SchwabRead Desk	0.03%	+0.1%	+0.9%	$6.4B
JMBS	Janus HendersonRead Desk	0.21%	−0.5%	+0.4%	$6.4B

Mortgage peers · YTD and past-year returns · as of Nov 5, 2026 · sorted by AUM

Head to Head

Put MBB head to head with VMBS →

VMBS vs MBB

YTD

VMBSVanguard · MortgageMBBiShares · Mortgage

Year to date

+0.2%

Level

Past year

+1.1%

+1.0%

VMBS wins+0.1 pts

Fee

0.03%

0.04%

VMBS winslower fee

Yield

4.3%

4.4%

MBB wins+0.1 pts

AUM

$15.5B

$35.7B

MBB2.3× more

2–1VMBS wins

Vanguard VMBS and iShares MBB · year-to-date · as of Nov 5, 2026 · AUM not scored

MBB vs VOO

YTD

MBB · iShares MBS

+0.2%

VOO · S&P 500

+13.4%

Gap

13.2 pts

iShares MBB and Vanguard VOO · YTD total return · as of Nov 5, 2026

MBB vs Its Peer Average

YTD

MBBAvsBPeer average

1D+0.5%+0.9%

1M+3.3%+2.4%

3M0.0%−2.6%

YTD+0.2%−2.6%

1Y+1.0%−1.2%

3Y+20.8%+19.8%

5Y+1.4%−6.6%

6–1MBB wins

24 Mortgage peers · each row scaled to its leader

The Details

MBB

Risk

2/5our risk indicator

CalmerBumpier

Volatility · 1Y4.90%

Deepest drop · 1Y−5.4%

Lowest point · 5Y−16.0%

52-week range

$91.97

$88.58−5.2% from the high$96.97

iShares MBB · past-year price moves · as of Nov 5, 2026

MBB

Fund Facts

Today

2007launched Mar 13

Tracks[…]

Exchange · CUSIPNASDAQ · 464288588

StructureETF

Leverage1x

Cost on $10,000$4 a year

Go deeper

Prospectus & documents Trading & liquidity Fees & costs Distributions

iShares MBB · fund facts · as of Nov 5, 2026

MBB

Payouts by Year

$0.35per share, Nov 2026

Distribution yield4.4%

PaidEvery month

Latest ex-date · paidNov 2 · Nov 5, 2026

12 payouts added up$4.08 a share

iShares MBB · distributions by ex-date · 2021–2026

All Fund FactsDocuments · trading · fees · every payout

Prospectus & Documents

SEC reported portfolio · 2026-08-31 ↗SEC reported portfolio · 2026-05-31 ↗summary prospectus · SEC 497K ↗SEC reported portfolio · 2026-02-28 ↗SEC reported portfolio · 2025-11-30 ↗SEC reported portfolio · 2025-08-31 ↗

Trading & Liquidity

Net asset value$91.59

Premium / discount[…]

Median spread · 30D[…]

Volume today4.2M

Average volume · 30D6.1M

Shares outstanding[…]

Options[…]

Fees & Costs

Net expense ratio0.04%

Gross expense ratio[…]

Management fee[…]

Cost on $10,000 a year$4.00

Our risk indicator2/5

Estimated yearly cost excludes trading costs and assumes constant assets.

Distributions

Ex-date	Paid	Per share
Nov 2, 2026	Nov 5, 2026	$0.35
Oct 1, 2026	Oct 6, 2026	$0.37
Sep 1, 2026	Sep 4, 2026	$0.34
Aug 3, 2026	Aug 6, 2026	$0.34
Jul 1, 2026	Jul 7, 2026	$0.34
Jun 1, 2026	Jun 4, 2026	$0.33
May 1, 2026	May 6, 2026	$0.33
Apr 1, 2026	Apr 7, 2026	$0.33
Mar 2, 2026	Mar 5, 2026	$0.33
Feb 2, 2026	Feb 5, 2026	$0.33
Dec 19, 2025	Dec 24, 2025	$0.33
Dec 1, 2025	Dec 4, 2025	$0.35

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