Do Ups and Downs Signal Down Trend?

 

February 21, 2008


With today’s decline, the S&P500 has registered the fifth day of alternate closes: down today, up yesterday, down the day before … This now the 38th of such strings since January 2000.

And 28 of these sequences took place when the market was in a long decline. While the other nine occurred when prices were regaining and approaching their previous record high. See the figure below.

Perhaps this is not a pattern signaling decay in prices, merely coincidence, but caution dictates that the alternative -it’s a signal- deserves attention.

DJIA -1.15 percent
NASDAQ -1.17 percent
S&P500 -1.29 percent

On the figure below, the S&P500 close is marked by a circle. The line connecting these circles  provides perspective on the time path of this index; it does not represent actual prices, only the circles do.

one-day-ups-and-downs-sp-2000-to-2008.gif

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