The Alt Bat pattern is a simple XABCD harmonic pattern that consists of four price swings and five pivot points — X, A, B, C, and D. One of the harmonic patterns was developed by Scott M Carney. This pattern incorporates the 1.13XA retracement, as the defining element in the Potential Reversal Zone (PRZ).

As with other XABCD harmonic patterns, the Alt Bat pattern starts from point X and swings through points A, B, and C, eventually ending at point D, making two impulse waves and two corrective waves. The XA and CD swings are the impulse waves, whereas the AB and BC swings are corrective waves.

As you can see, the AB swing is a retracement of the XA swing, while the BC swing is a retracement of the AB move. Then comes the CD swing, which extends beyond the B point and exceeds the X point. As with other harmonic patterns, the Alt Bat pattern can have a bullish or bearish version.