It isn't wise to short MCO since this asset has already declined by 94.27% from its all-time high. A reversal to retest $28.99 is expected before breakout.
At these prices, it is better to add to your position incrementally since no one can predict the exact bottom.
The best time to buy is when you have lost all faith in this project and your hope has completely perished. Buy when it feels uncomfortable to buy. Buy when you feel like throwing this asset in the trash. Buy when no one (including yourself) wants this asset. Buy when there is dark red blood in the streets. Buy when all that you feel is despair, regret, resentment, and even hatred.