“We consider all-or-nothing days in the market to be days where the net daily [advance/decline] reading in the S&P 500 exceeds plus or minus 400,” Bespoke said. “There have now been 55 all-or-nothing days for the S&P 500 in 2011.”
Bespoke expects to see 66 total all-or-nothing days by year-end, compared to the 52 for all of 2008. Since the start of August, the markets have experienced 35 all-or-nothing days, which is more than the total from 1990 through 2001. [Stock ETFs See Extreme Advance/Decline Ratios]
Graphic source: Bespoke Investment Group
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Max Chen contributed to this article.