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Notice how that trendline nearly connects all the reaction highs in 2007 and 2008 and the reaction lows for the first half of 2008.
From that the 38.2% Fib fan lined up with the April 2010 high perfectly. Most recently the market broke above that fan.
If these fans mean anything, 1230 is a likely target at the 50% fan. Combine this with a recent chart I posted using the reverse Fibonacci technique and the case for 123o is very compelling.
Here's that chart again below.
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I have posted similar charts before using this technique. What I find compelling is that the confluences in the previous charts did not line up nearly as perfect as this one does.
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Here's another chart we should not forget about. The inverted head and shoulders targets the same area.