Just looking at the chart, last few times MACD hit around this level and flattened out like it's doing now, 2/3 were around $20 drops over 6-22 trading days. The first dropped around $8 in 5 trading days. (Drops are approximate tops to approximate bottoms, not necessarily first down or up days)
1- March 4, 2019: ~$8
2- May 1, 2019: ~$20
3- July 29,2019: ~$20