Interesting point in time now. If the twenty week cycle has been dominant, then the odds favor a turn down soon.
The green vertical lines are the 21 TD cycle pinned to Mar 9, 2009, and have been hitting many peaks and troughs.
You can see the prior Demark Sequential 13' sell signal's on the chart in red, his TD Combo 13 sell signals print in blue, Jason Perl's preferred settings for the TD Sequential in purple 13's,
The Combo hit today, Perl's version of the Sequential hit yesterday. Today is the 100% fib TD time extension from the 5/20/15 top.
If the forty week cycle bottomed 2/11 (vs Aug 2015) and is currently dominant, then we will probably get a peak @ 19750, but Elliotticans tell me that would make for a very short Cycle Wave 4 and not follow the Elliott's alternation guideline.
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Good trading!