SPY is fascinating to me as a chartist now

The prior ATH was the key deciding line a few weeks ago. When the SPY closed below it it signaled the drop. Now with the low it formed on 9/24 in combination with the recent ATH it has created a 50% Retracement of the down move. Ya'll know how much I love my 50%...

This is clearly the consistent and current dividing line between bullish and bearish should this current up move continue to 339 as resistance. Holding or breaking it once again will give a signal to the near term future.