NEW YORK— Wall Street ended an erratic session Wednesday with a lopsided loss as blue chips fell on investors’ concerns over the health of financial companies and high-tech stocks fared better on news from the semiconductor sector. The Dow Jones industrials fell more than 100 points, but the other major indexes finished with single-digit losses.

The market was battling all the forces that have pummeled it in recent weeks: weak economic data, the price of oil and the credit crisis. Investors started the day disappointed by the government’s retail sales report, and a jump in oil pric...

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