A SPX 1500 would mean that a W-SC-1 (overdue), a M-E-1 (due 1/1/18) & a Bear-E-1 (due 1/1/18) would have to get confirmed. Right now it would take a crash of major proportions to get the Weekly & Monthly MACDs (12,26,9) below the zero line.
Now if the SPX goes to the highs currently projected of 3422.78, a Bear-E-1 low would then likely be around 2516.