The Federal Reserve has quietly admitted they had undercounted about $840 billion of municipal bonds. Bloomberg reports on this new pile of assets:
The U.S. municipal-bond market is 28 percent larger than reported in June, according to a quarterly Federal Reserve release, which used new data showing individuals own more state and local-government debt.
[...]
“The estimate of household holdings of municipal securities and loans is revised up by about $840 billion, on average, from 2004 forward,” according to the Fed’s Flow of Funds Accounts report for the third quarter.
The Federal Reserve may not have intended to bury the news, but I couldn’t find an official press release acknowledging the adjustment to their data. The massive adjustment only appeared as text in the quarterly flow of funds release.




