JPMorgan loses $1.5 billion so far in third quarter

(Reuters) - Investment bank JPMorgan Chase & Co has incurred losses of about $1.5 billion since the start of July, hurt by turmoil in the credit and mortgage markets and by wider credit spreads and lower levels of liquidity, the company said in a regulatory filing late Monday.

JPMorgan said trading conditions have "substantially deteriorated" in the third quarter compared with that of the second, and spreads on mortgage-backed securities and loans have "sharply widened." The estimated losses exclude hedging, the firm said.

In addition, if the bank's own credit spreads tighten, the change in the fair value of certain trading liabilities would also hurt trading results, JPMorgan said.

The third-largest U.S. bank was forced to write down the value of its $33 billion in mortgage-backed securities as prices continued to drop in July, the Financial Times said Tuesday, citing people close to the company.

The writedowns were partly driven by Merrill Lynch & Co Inc's recent decision to sell $30.6 billion in risky debt to U.S. private equity firm Lone Star Funds for just $6.7 billion, or about 22 cents on the dollar, the FT said.

Merrill's move ratcheted up pressure on rivals to cut the values of their own subprime assets as they grapple with mounting debts and weakening economies.

As of June 30, JPMorgan held an aggregate $19.5 billion of prime and Alt-A mortgage exposure, $1.9 billion of subprime mortgage exposure, and $11.6 billion of commercial mortgage-backed securities (CMBS) exposure, the filing showed.

"These mortgage exposures could be adversely affected by worsening market conditions, further deterioration in the housing market and market activity reflecting distressed sellers," the company said.

JPMorgan did not immediately return a call seeking comment.