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Asset Allocation with MBB


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Price Chart

Top 20 Holdings for MBB

Total Weights
Top 5: 12.0% | Top 10: 14.9% | Top 20: 18.9%

HoldingWeight
066922519BLACKROCK CASH CL INST SL AGENCY5.40%
312934SC7USD CASH4.00%
3132DWBP7FHLMC 30YR UMBS SUPER 2.00% 05/01/20510.97%
21H052660GNMA2 30YR TBA(REG C) 5.50% 06/22/20260.89%
01F052664UMBS 30YR TBA(REG A) 5.50% 06/11/20260.78%
01F050668UMBS 30YR TBA(REG A) 5.00% 06/11/20260.71%
21H050664GNMA2 30YR TBA(REG C) 5.00% 06/22/20260.63%
3618N5A33GNMA2 30YR 5.00% 11/20/20540.51%
36179WP93GNMA2 30YR 2.00% 10/20/20510.50%
36179WTX6GNMA2 30YR 2.00% 12/20/20510.50%
31418D7E6FNMA 30YR UMBS 2.00% 12/01/20510.49%
3132DWBH5FHLMC 30YR UMBS SUPER 2.00% 04/01/20510.47%
21H060663GNMA2 30YR TBA(REG C) 6.00% 06/22/20260.43%
36179WJR0GNMA2 30YR 2.50% 07/20/20510.42%
31418D6B3FNMA 30YR UMBS 2.00% 11/01/20510.41%
3140XLE46FNMA 30YR UMBS SUPER 2.00% 07/01/20510.41%
36179YFL3GNMA2 30YR 5.50% 09/20/20530.39%
36179WY85GNMA2 30YR 2.00% 03/20/20520.34%
36179WFG8GNMA2 30YR 2.50% 05/20/20510.33%
01F060667UMBS 30YR TBA(REG A) 6.00% 06/11/20260.32%

Return vs. Risk

Price Returns Compared

 202120222023202420252026Total [1]
Returns
MBB Return-1%-12%5%1%8%-1%-0%
Peers Return-1%-12%5%3%8%-0%2%
S&P 500 Return27%-19%24%23%16%9%98%

Monthly Win Rates [3]
MBB Win Rate25%25%42%58%83%60% 
Peers Win Rate33%25%42%63%75%60% 
S&P 500 Win Rate75%42%67%75%67%60% 

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 5/21/2026 (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
MBB0.27-0.01-0.44
Bond Top Results (3Y)   
USHY0.990.860.14
SHYG0.960.830.25
JNK1.020.770.06
HYG0.870.750.07
MBS0.460.540.54

Results as of 4302026.

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.

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Event

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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Current Dip Buy Opportunities Across ETFs

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

TickerNameDip %Mkt PricePrice DatePeak PricePeak Date# Days
NOBLProShares S&P 500 Dividend Aristocrats ETF-5.9%107.325212026114.03301202681
JEPIJPMorgan Equity Premium Income ETF-5.1%56.08521202659.09301202681
ARKKARK Innovation ETF-7.9%76.62521202683.211132026128
URAGlobal X Uranium ETF-21.0%48.86521202661.811282026113
LITGlobal X Lithium & Battery Tech ETF-7.9%84.38521202691.62511202610
CGBLCapital Group Core Balanced ETF-6.2%34.41521202636.67225202685
XLFState Street Financial Select Sector SPDR ETF-7.8%51.73521202656.111062026135
XLVState Street Health Care Select Sector SPDR ETF-7.1%148.155212026159.54301202681
XLEState Street Energy Select Sector SPDR ETF-5.5%59.13521202662.56329202653
XLPState Street Consumer Staples Select Sector SPDR ETF-5.4%84.66521202689.51301202681
XLUState Street Utilities Select Sector SPDR ETF-5.1%45.00521202647.40301202681
XLBState Street Materials Select Sector SPDR ETF-6.3%50.02521202653.38211202699
ITAiShares U.S. Aerospace & Defense ETF-10.9%223.155212026250.42302202680
XOPState Street SPDR S&P Oil & Gas Exploration & Production ETF-9.3%170.655212026188.18329202653
TLTiShares 20+ Year Treasury Bond ETF-6.6%84.22521202690.16301202681
VGLTVanguard Long-Term Treasury ETF-5.7%53.91521202657.20301202681
SPTLState Street SPDR Portfolio Long Term Treasury ETF-6.1%25.61521202627.28301202681
TLHiShares 10-20 Year Treasury Bond ETF-5.7%98.345212026104.25301202681
EDVVanguard World Funds Extended Duration ETF-9.1%62.11521202668.33301202681
GSGiShares GSCI Commodity-5.8%30.01521202631.85318202664
GLDSPDR Gold Trust-15.9%416.995212026495.901292026112
IAUiShares Gold Trust-15.9%85.435212026101.571292026112
GLDMSPDR Gold MiniShares Trust-15.8%89.875212026106.771292026112
SGOLETFS Physical Swiss Gold Shares-13.1%44.66521202651.411292026112
BARDirexion Daily Gold Bull 3X Shares-16.6%44.34521202653.161292026112
SLViShares Silver Trust-34.2%69.455212026105.601282026113
SIVRETFS Physical Silver Shares Trust ETF-24.8%83.395212026110.871282026113
PPLTETFS Physical Platinum Shares-29.3%17.84521202625.231252026116
CPERUnited States Copper Index Fund ETV-13.9%33.33521202638.711292026112
PALLETFS Physical Palladium Shares-32.2%25.22521202637.181282026113
USOUnited States Oil Fund LP-6.8%142.545212026152.9651920262
UNGUnited States Natural Gas Fund LP-33.0%11.33521202616.902012026109
BNOUnited States Brent Oil Fund LP ETV-7.1%55.85521202660.13504202617
IBITiShares Bitcoin Trust ETF-20.6%44.00521202655.441142026127
FBTCFidelity Wise Origin Bitcoin Fund-20.6%67.56521202685.121142026127
GBTCGrayscale Bitcoin Trust ETF-19.0%61.84521202676.311142026127
ETHAiShares Ethereum Trust ETF-36.9%16.15521202625.591142026127

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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 (MBB) seeks to track the investment results of an index composed of investment-grade mortgage-backed pass-through securities issued and/or guaranteed by U.S. government agencies.
Asset Class: Fixed Income | ETF Website

Recent Active Movers

Short Interest

Short Interest: As Of Date4302026
Short Interest: Shares Quantity1.8 Mil
Short Interest: % Change Since 415202617.7%
Average Daily Volume1.8 Mil
Days-to-Cover Short Interest1