March 12 (Reuters) - JPMorgan Chase ( JPM ) has restricted lending to private credit firms after marking down the value of certain loans in their portfolios, Bloomberg News reported on Wednesday.

The marked-down loans are to software companies, a sector that has been under heightened pressure as investors fear disruption from artificial intelligence, according to the report.

The move has not triggered any material margin calls so far, the report added, citing people familiar with the matter.

JPMorgan ( JPM ) did not immediately respond to a Reuters request for comment.