Tearsheet

Key Takeaways

  • MBB has returned +1.1% YTD vs +7.2% for SPY, +0.8% for AGG; +5.5% over the past 12 months (SPY +19.6%, AGG +4.2%). details →
  • Priced in gold, MBB has returned -46.7% over the past 3 years, vs +13.6% in dollars — its dollar gains have lagged gold. details →
  • Over the past month, MBB has seen net inflows of +$939M (+2.4% of assets). details →
  • MBB yields 3.89% based on its trailing 12-month distributions.
  • MBB is trading within 1.0% of its all-time high. details →
Last updated: 6/27/2026.

Price Chart

Asset Allocation with MBB

Risk Tolerance:
ConservativeModerateAggressive
Moderate — 55% equity / 25% bonds / 20% alternatives
10Y Return (ann.)
+11.8%
Volatility
10.8%
Sharpe
0.83
YTD
+4.6%
Modeled with monthly rebalancing to target weights; 10-year figures are annualized from monthly returns. Illustrative only — past performance is not indicative of future results.

Learn More →
Tailored Asset Allocation
[1] Personalized 5 Level Risk Tolerance Assessment
[2] Asset Allocation for My Risk Tolerance
Learn More →
Protect Wealth
[1] Defensive Portfolios
[2] Tax-Efficient Strategies

Top 20 Holdings for MBB

Total Weights
Top 5: 10.9% | Top 10: 13.6% | Top 20: 17.7%

HoldingETF Weight
066922519BLACKROCK CASH CL INST SL AGENCY7.28%
3132DWBP7FHLMC 30YR UMBS SUPER 2.00% 05/01/20511.02%
21H052678GNMA2 30YR TBA(REG C) 5.50% 07/20/20260.93%
01F052672UMBS 30YR TBA(REG A) 5.50% 07/13/20260.83%
21H050672GNMA2 30YR TBA(REG C) 5.00% 07/20/20260.80%
01F050676UMBS 30YR TBA(REG A) 5.00% 07/13/20260.67%
3618N5A33GNMA2 30YR 5.00% 11/20/20540.53%
36179WP93GNMA2 30YR 2.00% 10/20/20510.53%
36179WTX6GNMA2 30YR 2.00% 12/20/20510.52%
31418D7E6FNMA 30YR UMBS 2.00% 12/01/20510.51%
3132DWBH5FHLMC 30YR UMBS SUPER 2.00% 04/01/20510.49%
21H042679GNMA2 30YR TBA(REG C) 4.50% 07/20/20260.47%
21H060671GNMA2 30YR TBA(REG C) 6.00% 07/20/20260.45%
36179WJR0GNMA2 30YR 2.50% 07/20/20510.44%
31418D6B3FNMA 30YR UMBS 2.00% 11/01/20510.43%
3140XLE46FNMA 30YR UMBS SUPER 2.00% 07/01/20510.42%
36179YFL3GNMA2 30YR 5.50% 09/20/20530.40%
36179WY85GNMA2 30YR 2.00% 03/20/20520.35%
36179WFG8GNMA2 30YR 2.50% 05/20/20510.34%
3140XREC5FNMA 30YR UMBS SUPER 2.00% 04/01/20520.32%

Return vs. Risk

Price Returns Compared

 202120222023202420252026Total [1]
Returns
MBB Return-1%-12%5%1%8%1%1%
Peers Return-1%-12%5%3%8%1%3%
S&P 500 Return27%-19%24%23%16%7%96%

Monthly Win Rates [3]
MBB Win Rate25%25%42%58%83%83% 
Peers Win Rate33%25%42%63%75%78% 
S&P 500 Win Rate75%42%67%75%67%50% 

Max Drawdowns [4]
MBB Max Drawdown-2%-16%-9%-4%-3%-3% 
Peers Max Drawdown-2%-16%-9%-4%-3%-3% 
S&P 500 Max Drawdown-5%-25%-10%-8%-19%-9% 


[1] Cumulative total returns since the beginning of 2021
[2] Peers: VMBS, SPMB, MBS.
[3] Win Rate = % of calendar months in which monthly returns were positive
[4] Max drawdown represents maximum peak-to-trough decline within a year
[5] 2026 data is for the year up to 6/26/2026 (YTD)

Sharpe Ratios Compared

One measure of reward vs. risk is a Sharpe ratio. A higher ratio indicates better risk-adjusted returns. Most funds have Sharpe ratios < 1.0.

Ticker1Y3Y5Y
MBB0.550.04-0.43
Bond Top Results (3Y)   
USHY0.860.960.14
SHYG0.820.930.25
JNK0.890.880.06
HYG0.700.860.08
SPSB0.170.61-0.43

Results as of 5312026.

How Low Can It Go

EventMBBS&P 500
2022 Inflation Shock & Fed Tightening
  % Loss-15.9%-24.5%
  % Gain to Breakeven18.9%32.4%
  Time to Breakeven1047 days427 days

Compare to VMBS, SPMB, MBS

In The Past

iShares MBS ETF's stock fell 0.0% during the 2025 US Tariff Shock. Such a loss loss requires a 0.0% gain to breakeven.

Preserve Wealth

Limiting losses and compounding gains is essential to preserving wealth.

Asset Allocation

Actively managed asset allocation strategies protect wealth. Learn more.

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Compare to VMBS, SPMB, MBS

In The Past

iShares MBS ETF's stock fell 0.0% during the 2025 US Tariff Shock. Such a loss loss requires a 0.0% gain to breakeven.

Preserve Wealth

Limiting losses and compounding gains is essential to preserving wealth.

Asset Allocation

Actively managed asset allocation strategies protect wealth. Learn more.

MBB Dip Buy History


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Alerts when dip buy opportunities arise.
Notify Me →

Current Dip Buy Opportunities Across ETFs

ETFs currently down 5% or more from trailing 6M peaks.

TickerNameDip %Mkt PricePrice DatePeak PricePeak Date# Days
OEFiShares S&P 100 ETF-5.4%357.576272026378.10601202626
XLGInvesco S&P 500 Top 50 ETF-8.2%59.30627202664.59601202626
MAGSRoundhill Magnificent Seven ETF-13.2%61.60627202670.94514202644
QQQInvesco QQQ Trust, Series 1-5.3%706.526272026746.16602202625
QQQMInvesco NASDAQ 100 ETF-5.3%290.956272026307.23602202625
ONEQFidelity Nasdaq Composite Index ETF-6.9%99.386272026106.70602202625
VUGVanguard Growth ETF-8.2%82.76627202690.19601202626
IWFiShares Russell 1000 Growth ETF-7.6%119.046272026128.77601202626
IVWiShares S&P 500 Growth ETF-6.4%132.586272026141.59601202626
SCHGSchwab U.S. Large-Cap Growth ETF-7.0%32.84627202635.30601202626
SPYGState Street SPDR Portfolio S&P 500 Growth ETF-6.4%114.716272026122.60601202626
VONGVanguard Russell 1000 Growth ETF-7.7%122.126272026132.35601202626
MGKVanguard Mega Cap Growth ETF-8.4%84.27627202691.97601202626
AKREAkre Focus ETF-19.7%53.50627202666.591062026172
SCZiShares MSCI EAFE Small-Cap ETF-5.0%82.16627202686.49531202627
VSSVanguard FTSE All-World EX-US Small-Cap Index Fund-5.4%153.016272026161.79511202647
SCHCSchwab International Small-Cap Equity ETF-7.4%47.75627202651.543012026118
IEMGiShares Core MSCI Emerging Markets ETF-5.5%81.30627202686.0062220265
EEMiShares MSCI Emerging Markets ETF-5.6%67.19627202671.2162220265
FNDESchwab Fundamental Emerging Markets Equity ETF-7.2%39.28627202642.35602202625
EWYiShares MSCI South Korea ETF-10.0%197.286272026219.2062120266
EWZiShares MSCI Brazil ETF-16.9%34.67627202641.73414202674
FXIiShares China Large-Cap ETF-22.5%31.59627202640.781292026149
ILFiShares Latin America 40 ETF-11.3%33.81627202638.10414202674
KWEBKraneShares CSI China Internet ETF-36.4%23.94627202637.661122026166
SCHYSchwab International Dividend Equity ETF-5.9%31.74627202633.733012026118
QQQINEOS Nasdaq 100 High Income ETF-5.2%54.69627202657.69602202625
MTUMiShares MSCI USA Momentum Factor ETF-5.6%325.746272026345.2262220265
ARKKARK Innovation ETF-6.1%78.13627202683.211132026165
URAGlobal X Uranium ETF-29.5%43.59627202661.811282026150
BOTZGlobal X Funds Global X Robotics & Artificial Intelligence ETF-13.5%36.01627202641.63513202645
ROBOROBO Global Robotics & Automation Index ETF-9.2%82.00627202690.34602202625
LITGlobal X Lithium & Battery Tech ETF-17.1%75.93627202691.62511202647
ICLNiShares Global Clean Energy ETF-17.9%19.50627202623.75602202625
ARKQARK Autonomous Technology & Robotics ETF-14.1%123.606272026143.82528202630
ARKWARK Next Generation Internet ETF-9.7%139.226272026154.18601202626
ARKXARK Space & Defense Innovation ETF-15.4%31.93627202637.74528202630
NASATema Space Innovators ETF-36.5%26.58627202641.89527202631
XOVREntrepreneurShares Series Trust ERShares Private-Public Crossover ETF-5.9%19.69627202620.93616202611
AGIXKraneShares Artificial Intelligence ETF-9.3%44.79627202649.40601202626
CGBLCapital Group Core Balanced ETF-6.2%34.41627202636.672252026122
GDEWisdomTree Efficient Gold Plus Equity Strategy Fund-13.8%60.67627202670.39511202647
RAAXVanEck Real Assets ETF-6.8%39.81627202642.70511202647
VGTVanguard Information Technology ETF-9.4%113.866272026125.62602202625
XLKState Street Technology Select Sector SPDR ETF-8.6%181.116272026198.21602202625
XLEState Street Energy Select Sector SPDR ETF-13.9%53.84627202662.56329202690
XLCState Street Communication Services Select Sector SPDR ETF-11.3%106.186272026119.702012026146
XLYState Street Consumer Discretionary Select Sector SPDR ETF-8.0%114.376272026124.271122026166
XLPState Street Consumer Staples Select Sector SPDR ETF-5.4%84.71627202689.513012026118
FXNFirst Trust Energy AlphaDEX Fund-12.4%20.31627202623.18329202690
SMHVanEck Semiconductor ETF-8.6%611.616272026668.9162220265
SOXXiShares Semiconductor ETF-9.9%589.946272026655.0162220265
ITAiShares U.S. Aerospace & Defense ETF-5.4%236.786272026250.423022026117
XOPState Street SPDR S&P Oil & Gas Exploration & Production ETF-17.8%154.686272026188.18329202690
IGViShares Expanded Tech-Software Sector ETF-18.4%88.206272026108.1012282025181
IAIiShares U.S. Broker-Dealers & Securities Exchanges ETF-7.3%175.826272026189.591152026163
MISLFirst Trust Indxx Aerospace & Defense ETF-13.5%44.10627202650.981192026159
RINGiShares MSCI Global Gold Miners ETF-33.7%65.96627202699.423012026118
SOXQInvesco PHLX Semiconductor ETF-9.9%103.696272026115.1162220265
BWXState Street SPDR Bloomberg International Treasury Bond ETF-5.3%21.73627202622.952162026131
PDBCInvesco Optimum Yield Diversified Commodity Strategy No K-1 ETF-16.1%15.87627202618.91512202646
DBCInvesco DB Commodity Index Tracking Fund-16.2%26.57627202631.69512202646
COMTiShares GSCI Commodity Dynamic Roll Strategy ETF-17.3%30.21627202636.53519202639
GSGiShares GSCI Commodity-5.8%30.01627202631.853182026101
BCIabrdn Bloomberg All Commodity Strategy K-1 Free ETF-14.0%22.29627202625.91512202646
FTGCFirst Trust Global Tactical Commodity Strategy Fund-11.9%26.91627202630.53512202646
HGERHarbor Commodity All-Weather Strategy ETF-12.6%29.25627202633.47512202646
GLDSPDR Gold Trust-24.7%373.636272026495.901292026149
IAUiShares Gold Trust-24.6%76.566272026101.571292026149
GLDMSPDR Gold MiniShares Trust-24.5%80.616272026106.771292026149
SGOLETFS Physical Swiss Gold Shares-13.1%44.66627202651.411292026149
BARDirexion Daily Gold Bull 3X Shares-16.6%44.34627202653.161292026149
SLViShares Silver Trust-49.5%53.286272026105.601282026150
SIVRETFS Physical Silver Shares Trust ETF-24.8%83.396272026110.871282026150
PPLTETFS Physical Platinum Shares-41.4%14.77627202625.231252026153
CPERUnited States Copper Index Fund ETV-13.9%33.33627202638.711292026149
PALLETFS Physical Palladium Shares-40.7%22.04627202637.181282026150
USOUnited States Oil Fund LP-31.0%105.486272026152.96519202639
UNGUnited States Natural Gas Fund LP-29.8%11.87627202616.902012026146
BNOUnited States Brent Oil Fund LP ETV-7.1%55.85627202660.13504202654
IBITiShares Bitcoin Trust ETF-38.9%33.85627202655.441142026164
FBTCFidelity Wise Origin Bitcoin Fund-38.9%51.98627202685.121142026164
GBTCGrayscale Bitcoin Trust ETF-19.0%61.84627202676.311142026164
ETHAiShares Ethereum Trust ETF-53.5%11.89627202625.591142026164

ETF Fund Flows

Largest fund inflows and outflows across ETFs, with the asset-allocation rotation they imply.

Net fund flows · as of 2026-06-26

Asset allocation rotation · Past month

  • Equity ETFs drew the largest net inflows (+$84.1B), followed by Bond (+$22.9B), while Commodity (−$6.7B) and Crypto (−$4.9B) saw the largest outflows.
  • Within the mix, money rotated into US Large Cap Core (+$41.8B) and out of Factor Smart Beta (−$8.1B).
  • Relative to fund size, ARKQ drew the largest inflow (+54.0% of AUM) and THRO the largest outflow (−37.2%).
Largest inflows
#TickerNameTypeNet flow% of AUM
1IVViShares Core S&P 500 ETFEquity US Large Cap Core+$57.73B+6.8%
2SPYState Street SPDR S&P 500 ETF TrustEquity US Large Cap Core+$15.81B+2.0%
3DRAMRoundhill Memory ETFOther+$8.33B+49.6%
4SPYMState Street SPDR Portfolio S&P 500 ETFEquity US Large Cap Core+$8.24B+5.5%
5IUSBiShares Core Universal USD Bond ETFBond Core Plus Multisector+$5.23B+12.5%
6QQQMInvesco NASDAQ 100 ETFEquity US Nasdaq Growth+$5.02B+5.1%
7VONGVanguard Russell 1000 Growth ETFEquity US Large Growth+$4.94B+11.0%
8QQQInvesco QQQ Trust, Series 1Equity US Nasdaq Growth+$4.71B+1.0%
9VHTVanguard Health Care ETFEquity Broad Sector+$4.38B+26.1%
10SGOViShares 0-3 Month Treasury Bond ETFCash+$4.3B+4.5%
Largest outflows
#TickerNameTypeNet flow% of AUM
1VOOVanguard S&P 500 ETFEquity US Large Cap Core-$39.56B-4.0%
2QUALiShares MSCI USA Quality Factor ETFEquity Factor Smart Beta-$6.99B-15.4%
3EFViShares MSCI EAFE Value ETFEquity International Developed Broad-$5.91B-23.9%
4VLUEiShares MSCI USA Value Factor ETFEquity Factor Smart Beta-$5.04B-34.9%
5GLDSPDR Gold SharesCommodity Gold-$4.02B-2.8%
6IBITiShares Bitcoin Trust ETFCrypto-$3.35B-6.9%
7TLTiShares 20+ Year Treasury Bond ETFBond Long Treasury-$2.83B-6.9%
8IAGGiShares Core International Aggregate Bond ETFBond International-$2.79B-25.7%
9IVEiShares S&P 500 Value ETFEquity US Large Value-$2.63B-5.5%
10THROiShares U.S. Thematic Rotation Active ETFEquity Thematic-$2.42B-37.2%

Largest ETF fund flows across ~2559 funds (min AUM $100M). Net creations/redemptions; leveraged & inverse ETFs excluded. A ⚠ marks a day excluded as a suspected data error.

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About MBB

0Holdings Count: 11
Expense Ratio: 0.04%
Inception Date: 2007-03-13
iShares MBS ETF
The iShares MBS ETF, known by its symbol MBB, is structured to mirror the financial performance of a specific index. This index is made up of premium, mortgage-backed pass-through securities that have been either provided or secured by agencies of the United States government.
Asset Class: Fixed Income | ETF Website

Recent Active Movers

Peer Comparisons

Peers to compare with:

Profile

MBBVMBSSPMBMBSMedian
NameiShares MB.Vanguard M.State Stre.Angel Oak . 
Asset ClassBondBondBondBond-
AUM ($ Bil)39.817.17.10.212.1
Expense Ratio0.04%0.03%0.04%0.79%0.04%
10-D Avg Volume (Mil)2.251.441.220.071.33
Latest Day Volume (Mil)2.001.381.020.101.20
Holdings Count113442,718140242
Inception Date3/13/200711/19/20091/15/20092/15/2024-

Fundamentals

MBBVMBSSPMBMBSMedian
NameiShares MB.Vanguard M.State Stre.Angel Oak . 
Net Asset Value94.9946.9322.388.72-
Premium/Discount-0.1%0.1%0.1%-0.4%0.0%
Distribution Yield4.2%4.1%4.0%5.6%4.2%
Sales Yield-----
Earnings Yield-----

Valuation

MBBVMBSSPMBMBSMedian
NameiShares MB.Vanguard M.State Stre.Angel Oak . 
P/S (TTM)-----
P/E (TTM)-----
P/FCF (TTM)-----
Forward P/E-----
Forward P/S-----

Risk

MBBVMBSSPMBMBSMedian
NameiShares MB.Vanguard M.State Stre.Angel Oak . 
Volatility (1Y)4.5%4.3%4.3%2.8%4.3%
Volatility (3Y)6.3%6.2%6.3%4.0%6.2%
Volatility (5Y)6.8%6.8%6.8%4.0%6.8%
Beta (1Y)0.110.110.100.050.11
Beta (3Y)0.080.080.080.020.08
Beta (5Y)0.090.080.080.020.08
Sharpe Ratio (1Y)1.211.401.312.031.36
Sharpe Ratio (3Y)0.710.760.711.580.74
Sharpe Ratio (5Y)0.100.140.101.580.12
Max Drawdown (1Y)-2.9%-2.7%-2.9%-2.2%-2.8%
Max Drawdown (3Y)-7.7%-7.6%-7.7%-4.1%-7.7%
Max Drawdown (5Y)-17.2%-17.0%-17.5%-4.1%-17.1%

Returns

MBBVMBSSPMBMBSMedian
NameiShares MB.Vanguard M.State Stre.Angel Oak . 
1M Return0.6%0.9%0.8%0.6%0.7%
3M Return1.7%2.1%1.8%0.9%1.7%
6M Return1.2%1.6%1.3%1.4%1.4%
YTD Return1.1%1.5%1.2%1.1%1.2%
1Y Return5.5%6.1%5.7%5.9%5.8%
2Y Return11.1%11.6%11.2%12.6%11.4%
3Y Return13.8%14.8%13.8%-13.8%

Short Interest

Short Interest: As Of Date6152026
Short Interest: Shares Quantity3.0 Mil
Short Interest: % Change Since 5312026-6.8%
Average Daily Volume2.4 Mil
Days-to-Cover Short Interest1.2 days