The Dow Jones industrial average is up 36 points at 13,362 shortly after the opening bell Friday. Wal-Mart Stores was the biggest gainer in the Dow following an analyst upgrade, up 73 cents at $75.74.
The Standard & Poor's 500 index edged up one point to 1,434 and the Nasdaq composite was off two points at 3,047.
The S&P is headed for a weekly loss of nearly 2 percent following three down days this week.
Wells Fargo fell 4 percent, giving up $1.38 to $33.80, after its revenue fell short of what analysts were expecting.