US STOCKS-Wall St drops for 5th day on global economy, earnings concern
* Bank of America, Citi down after results
* U.S. crude falls more than 4 percent
* Swiss National Bank scraps 3-year euro cap on franc
* Best Buy shares fall
* Indexes off: Dow 0.4 pct, S&P 0.6 pct, Nasdaq 1.1 pct (Updates to early afternoon)
By Caroline Valetkevitch
NEW YORK, Jan 15 (Reuters) - U.S. stocks fell in afternoon trading Thursday, putting them on track for a fifth day of losses, as bank results disappointed and investors fretted over the potential impact of global economic weakness on U.S. earnings.
Oil prices settled down more than 4 percent after weak U.S. economic data spurred worries over oil demand.
"There's a lot of cash still on the sidelines because of the worries over the global economy, over what's going to happen with lower commodity prices," said Eric Marshall, director of research at Hodges Capital Management in Dallas. Continuación...