Investment-grade, intermediate municipal bonds are yielding 2.2% and up, or 3.4% after tax for upper-income investors.

WSJ: The Intelligent Investor: Are Bond Rates on a Road to Nowhere?

Just over a third got a grade C or above compared with the 74.2% getting the equivalent Intermediate GNVQ.

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Active managers in intermediate-term securities fared better than managers in long-term securities, and managers in investment grade bonds fared better than managers in high-yield securities.

FORBES: Active Versus Passive Bond Funds