Wall Street falls on tech and financials
* JPMorgan Chase was the Dow's biggest drag, falling 5.9 percent to $29.12, after Merrill Lynch downgraded the bank's stock and forecast a fourth-quarter loss.
* The Dow Jones industrial average was down 89.20 points, or 1.03 percent, at 8,540.48. The Standard & Poor's 500 Index fell 11.98 points, or 1.36 percent, at 867.75. The Nasdaq Composite Index lost 36.10 points, or 2.34 percent, at 1,504.62.
(Reporting by Leah Schnurr; Editing by James Dalgleish)