Due to a lack of tax-deferred space, my current tax bracket, and the current interest rate spread over US Treasury bonds, I started investing part of my portfolio in Vanguard’s tax-exempt municipal bond funds. As a result, I try to read every single muni bond article that Vanguard puts out. In this month’s blog post Municipal debt, Detroit, and diversification, one of the topics covered was the importance of minimizing fund fees.
Research shows that lower-cost mutual funds have tended to perform better than higher-cost funds over time. So instead of worrying about things we can’t control (e.g., how a judge in a municipal bankruptcy is going to decide a case), we should focus on controlling the one variable that we can, which is cost.
The article included the chart below, which plots the net fund expense ratios of municipal bond funds against their 5-year annualized returns.

Source: Vanguard Blog, Morningstar



How time flies. Almost exactly 5 years ago on November 21st, 2008, I was sitting alone in yet another hotel on a business trip in a city that I can’t even remember. CNN was on TV as I wrote the following in a blog post with the title
Speaking of holding municipal bonds, I’ve been catching up on the troubles in Detroit and Puerto Rico. Last month, there was a flurry of articles warning about mutual funds with high exposure to Puerto Rico bonds, as they were yielding over 9% and trading at 60 cents on the dollar. Most junk corporate bonds don’t yield that much! Yet, they still clung to investment-grade status from the major ratings agencies because if they went any lower, the bonds would crash as many mutual funds would be then forced by their mandates to sell the bonds. Don’t you love ratings agencies?
I would characterize my personal portfolio as 85% passive, 15% active, and 100% low-cost. Why is part of my portfolio managed by people trying to generate “alpha”? Aren’t I supposed to say that index funds are always better? Author and money manager Rick Ferri has a good post about When Active Funds Makes Sense, even he is a well-known index fund advocate.
After posting 
Investment research firm Morningstar rates 529 plans in their annual “529 College Savings Plans Research Paper and Industry Survey”. They recently announced their 
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