While everyone else is looking for Elliott Waves, Doji's, Swing highs, Fibonacci, Harami, Volume, Overbought, Momentum....
Why not just silly number games?
Scenario #1
SPX
666 to 888 = 222
50 pct of 222= 111
888-111 = 777
Scenario #2
SPX
666 to 999 = 333 (50 pct)
2/3 = 222
to get to 777
then again it is a chopper
so how about
666 to 888 to 777 to 999 to 888 to 777
But don't forget the Chinese love the number 8 so they could be lined up at the door.
