What it indicates the big pump or dump

Did you notice the volume spike in bitcoin that was huge
We are trying to analyse what it indicates. Is the volume is for buying or selling the nest photo shows that the volume spike is for buy trade
Green indicates buying and red indicates selling. Now you can imagine the buying volume is very huge.
I think it was the entry of any big whale of cryto market.
The impact of this volume spike can be seen in few days it can be lead to a big pump or a very huge dump