NEW YORK—Wall Street skidded lower Tuesday as downbeat news from JPMorgan Chase & Co. and other financial companies lifted the market’s anxiety about the continuing impact of the credit crisis on the economy. The Dow Jones industrials fell nearly 140 points.

The latest reminder of continuing troubles for banks and brokerages came when JPMorgan said late Monday it has incurred wider losses in its mortgage holdings so far in the third quarter than in the second quarter. The nation’s second-largest bank by assets said in a regulatory filing it lost $1.5 billion, after hedges, in its m...

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