NEW YORK, Dec 8 (Reuters) - The U.S. municipal bond market shrank slightly to $3.831 trillion in the third quarter from a revised $3.838 trillion in the second quarter, according to a quarterly report from the Federal Reserve released on Thursday.
Households, or retail investors, held $1.591 trillion of muni bonds compared with $1.598 trillion the previous quarter.
Property and casualty insurance companies bought $19 billion of munis in the third quarter after a revised $1.9 billion of acquisitions in the second quarter. Life insurance companies added $7.6 billion to their muni holdings, while U.S. banks picked up $40 billion.
U.S mutual funds bought $75.9 billion of munis in the third quarter, and exchange-traded funds added $6.2 billion.
Foreign owners bought $14 billion of muni bonds. Their third quarter holdings were $93.3 billion, the highest level on record. (Reporting by Hilary Russ)