Tuesday Look Ahead: Wall Street Sell-Off Not Over Yet

Stocks stumbled in Monday's final hour, signaling traders that the market's sell off could still have some ways to go.

Photo: Oliver Quillia for CNBC.com Outside the New York Stock Exchange in lower Manhattan.

The Dow fell 103 or 1 percent, to 9908, its first close below 10,000 in three months. The Dow is now 7.6 percent below its Jan. 19 high. The S&P fell 9 points, or 0.9 percent to 1056. It is now 8.1 percent below its January high but still 56 percent above its March low.

"A 10 percent down move on a correction is the first stop,Read more