Since we didn't cogently reach the 4544.8 level (which correspond to 38.20% of Fibo 1), we cannot estimate to gain the next level, at 5026.9. This retracement was applied on the down trend starting from 24 Feb 2020.
After that, I applied Fibo Retr once again on the up trend starting from the 19 Mars 2020, to its actual highest level 20 April. If CAC40 breaks down the level 4339.9 (23.60% level of the 2nd Fibo Retr), it's highly estimated that he will search down for 4219.1 level.