Tip-Toeing On The 200-DMA: Sell Signal Only Ticks Away

There’s a number being whispered among stock market traders, and the whispers just got a little louder.

The number: 2,770.That’s the level where the tumbling S&P 500 Index SPX, -0.69%  would trigger a closely watched sell signal, potentially setting off a broader alarm, selling pressure and further falls. The S&P 500’s close Wednesday: 2,783 points — just a few points away.