I believe SPY is in a minor wave 4 correction of Intermediate wave 1)) up. If wave 4 is similar to wave 2, we can expect a minor pullback, probably somewhere between a .232 & .382 retracement, somewhere between 272.02 and 270.68.
Since wave 2 was a flat, I would expect wave 4 to be a zig-zag, as it's shaping up so far.
Since the start of this bull move from the May 3 low, all corrections have been very shallow. I see no reason for this wave 4 to be any different.