US STOCKS-Wall St lower on bank earnings; Wal-Mart hammered
* Wal-Mart sinks on weak forecast; drags down Dow
* JPMorgan falls, Bank of America rises after results
* U.S. retail sales barely rise in Sept
* Indexes down: Dow 0.71 pct, S&P 0.46 pct, Nasdaq 0.42 pct (Changes comment, updates prices)
By Abhiram Nandakumar
Oct 14 (Reuters) - U.S. stocks retreated on Wednesday as investors absorbed mixed earnings from major banks and Wal-Mart's weak forecast wiped more than $20 billion off the retailer's market value.
Weak economic data from the United States and China added to worries about the health of the global economy even as investors' focus shifted to company results.
"The major theme, not only today but through the balance of the earnings season, is going to be the revisions to fourth quarter and 2016 earnings," said Bill Northey, chief investment officer of the private client group at U.S. Bank.
Wal-Mart sank 8.6 percent to $60.99, on track for its worst one-day performance in more than 17 years, after the retailer said the strong dollar was likely to take $15 billion out of its full-year revenue. Continuación...