A Successful Retest? Yes?

And it looks likely to pass? Yes it does.

1 min, 3C v.II showing the level of the retest which has become an important level for the near term outlook. 3C is showing a leading divergence

a 3C v.III 5 min chart again showing a leading divergence.

Finally 3C v.III in 10-min, is showing another leading divergence suggesting the $107.50 area will be broken.

A good play on the breakout if it occurs will be to ride UPRO until we get a reversal, it shouldn't be a very long trade, a few days at the max and possibly today at the min.

You would enter UPRO if the SPY breaks above $107.65 and a stop would be around $107.20.  You may want to cut your exposure to 1% risk as this is a fairly tight stop.