U.S. banks' commercial and industrial loans increased $3.9 billion, to about $1.227 trillion in the week ended Dec. 15, the latest week for which data is available, the Federal Reserve said Thursday.

The report was issued a day earlier than usual because of the Christmas holiday.

The increase came after a $3.7 billion rise the previous week.

Jumbo certificates of deposit fell $20 billion, to about $1.722 trillion, in the latest weekly data, after rising $4.3 billion the previous week. Revolving home equity loans fell $1.6 billion, to $582.3 billion, after remaining flat the preceding week.

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