The municipal bond market has been in a state of turmoil since the fall fo 2008. It started with the short-term auction rate preferred muni’s, then companies insuring municipal bonds went into bankruptcy (late 2008 and early 2009) and finally the credit quality of municipalities themselves came into question (late 2009). Starting in late 2010, individual investors (the main buyers of municipal bonds) awoke to the realization that there is real credit risk to municipal bonds. Credit risk is rating the ability of the municipality to pay the interest and principal as promised.
Apart from Build American Bonds, a program offered thru the US Treasury Department which no longer exists, municipal bonds provide tax exempt income. There are exceptions relating to AMT bonds, private activity bonds and a few other types. Individuals buy muni bonds in 3 ways: 1) ETFs, 2) mutual funds (open and closed) and 3) individual bond purchases (mostly done thru professional money managers for the benefit of individuals). There has been a ton of research, publicly available starting in late 2010, about the credit risk in muni bonds. Subsequently, there has been billions of dollars withdrawn from muni bonds especially in the long and intermediate maturities space. Interestingly, ETFs and especially mutual funds, have been providing long lists of muni bonds they want to sell to meet the sell requests of individual investors. Around 30% of the muni bonds on those lists get sold (industry source). These lists generally show muni bonds that have the highest quality and liquidity. This means two things: 1) muni investors in high quality bonds have seen the larger declines compared to lower quality bonds; and 2) municipal bond mutual funds are now sitting with shorter maturity and lower quality bonds.
Bottom line: Investors are lumping good and bad municipal bonds together. They are demanding liquidity (via their sell orders) and the liquidity providers (those buying the muni bonds) are extracting a higher and higher price for that liquidity (via a lower price of the bond itself). History provides great examples of what happens when liquidity providers have the upper hand over liquidity demanders (think supply and demand).
Always Asking, Never Assuming™
Christopher Holtby