Irving H. Picard announced that an amended complaint was filed in federal court in Manhattan seeking at least $19 billion in damages from the bank. The trustee had initially sought $6.4 billion.
Lawyers for the trustee said in a statement Friday that the newly filed complaint adds evidence and detail to previous allegations that the bank knew about the fraud.
A spokeswoman for J.P. Morgan Chase did not immediately respond to a request for comment Friday.
The bank has previously accused the trustee of "blatantly distorting" its role.
