The iShares MBS ETF (MBB) and the iShares National Muni Bond ETF (MUB) are both among the Top 100 ETFs. MBB is a iShares Intermediate Government fund and MUB is a iShares Muni National Interm fund. So, what’s the difference between MBB and MUB? And which fund is better?
The expense ratio of MBB is 0.01 percentage points lower than MUB’s (0.06% vs. 0.07%). MBB is mostly comprised of AAA bonds and MUB has a high exposure to AA bond. Overall, MBB has provided lower returns than MUB over the past 11 years.
In this article, we’ll compare MBB vs. MUB. We’ll look at holdings and fund composition, as well as at their risk metrics and industry exposure. Moreover, I’ll also discuss MBB’s and MUB’s annual returns, portfolio growth, and performance and examine how these affect their overall returns.
|Name||iShares MBS ETF||iShares National Muni Bond ETF|
|Category||Intermediate Government||Muni National Interm|
The iShares MBS ETF (MBB) is a Intermediate Government fund that is issued by iShares. It currently has 25.69B total assets under management and has yielded an average annual return of 3.08% over the past 10 years. The fund has a dividend yield of 1.88% with an expense ratio of 0.06%.
The iShares National Muni Bond ETF (MUB) is a Muni National Interm fund that is issued by iShares. It currently has 22.71B total assets under management and has yielded an average annual return of 4.04% over the past 10 years. The fund has a dividend yield of 1.96% with an expense ratio of 0.07%.
MBB’s dividend yield is 0.08% lower than that of MUB (1.88% vs. 1.96%). Also, MBB yielded on average 0.96% less per year over the past decade (3.08% vs. 4.04%). The expense ratio of MBB is 0.01 percentage points lower than MUB’s (0.06% vs. 0.07%).
|MBB Bond Sectors||Weight|
MBB’s Top Bond Sectors are ratings of AAA, Others, Below B, B, and BB at 99.51%, 0.49%, 0.0%, 0.0%, and 0.0%. The fund is less weighted towards BBB (0.0%), A (0.0%), and AA (0.0%) rated bonds.
|MUB Bond Sectors||Weight|
MUB’s Top Bond Sectors are ratings of AA, AAA, A, BBB, and Others at 60.38%, 18.39%, 15.04%, 6.0%, and 0.17%. The fund is less weighted towards BB (0.02%), Below B (0.0%), and B (0.0%) rated bonds.
The iShares MBS ETF (MBB) has a Sharpe Ratio of 0.87 with a R-squared of 74.38 and a Alpha of 0.14. Its Standard Deviation is 2.12 while MBB’s Mean Return is 0.2. Furthermore, the fund has a Treynor Ratio of 3.02 and a Beta of 0.6.
The iShares National Muni Bond ETF (MUB) has a Treynor Ratio of 3.2 with a Beta of 1.01 and a Sharpe Ratio of 0.88. Its Standard Deviation is 3.68 while MUB’s Mean Return is 0.32. Furthermore, the fund has a Alpha of -0.46 and a R-squared of 99.
MBB’s Mean Return is 0.12 points lower than that of MUB and its R-squared is 24.62 points lower. With a Standard Deviation of 2.12, MBB is slightly less volatile than MUB. The Alpha and Beta of MBB are 0.60 points higher and 0.41 points lower than MUB’s Alpha and Beta.
MBB had its best year in 2019 with an annual return of 6.27%. MBB’s worst year over the past decade yielded -1.92% and occurred in 2013. In most years the iShares MBS ETF provided moderate returns such as in 2012, 2017, and 2020 where annual returns amounted to 2.23%, 2.37%, and 4.03% respectively.
The year 2011 was the strongest year for MUB, returning 10.85% on an annual basis. The poorest year for MUB in the last ten years was 2013, with a yield of -3.26%. Most years the iShares National Muni Bond ETF has given investors modest returns, such as in 2015, 2017, and 2020, when gains were 2.99%, 4.61%, and 4.87% respectively.
|Fund||Initial Balance||Final Balance||CAGR|
A $10,000 investment in MBB would have resulted in a final balance of $13,906. This is a profit of $3,906 over 11 years and amounts to a compound annual growth rate (CAGR) of 3.08%.
With a $10,000 investment in MUB, the end total would have been $15,333. This equates to a $5,333 profit over 11 years and a compound annual growth rate (CAGR) of 4.04%.
MBB’s CAGR is 0.96 percentage points lower than that of MUB and as a result, would have yielded $1,427 less on a $10,000 investment. Thus, MBB performed worse than MUB by 0.96% annually.
Over the past years, I have discovered several tools and products that have helped me tremendously on my path to financial freedom:
P.S.: The links below are affiliate links, which means I receive a small commission at no extra cost to you when you sign up for one of the services. Thank you for your support!
1)Personal Capital is simply the best tool out there to track your net worth and plan for financial freedom. Just their retirement planner alone has become an invaluable tool to keep myself on track financially. Try it out, it's free!
2) Take a look at M1 Finance, my favorite broker. I love how easy it is to invest and maintain my portfolio with them. I can set up automatic transfers, rebalance my portfolio with one click and even borrow up to 35% of my assets at super low interest rates!
3) Fundrise is by far the best way I've found to invest in Real Estate. You can diversify your portfolio by investing in their eREITs or even allocate capital to individual properties (without the hassle of managing tenants!).
4) Groundfloor is another great way to get exposure to the real estate sector by investing in short-term, high-yield real estate debt. Current returns are >10% and you can get started with just $10.
5) If you are interested in startup investing, check out Mainvest. I've started allocating a small amount of assets to invest in and support small businesses. Return targets are between 10-25% and you can start with just $100!
To see all of my most up-to-date recommendations, check out the Recommended Tools section.