Halving just means reward per block will be halved from current 25 bitcoin per block to 12.5 bitcoin to rewards. And there is lot more speculation that bitcoin price will pumped because supply will be limited but we don't have to forget about there is already good supply of bitcoin currently circulating, only production rate of new bitcoin is halved. Price can go either down or up, hard to predict.
Anybody saying a price rise is guaranteed is lying, but it's very likely the price will rise over the next year. A big whale could crash the price by dumping tens of thousands of coins, although it's not probable if waiting for a rise would get a better price.
a whale is not a brainless human. a whale is someone with a lot of money and a lot of experience in investment and in bitcoin market who has been investing in bitcoin to make a big profit.
so do you really think what you said is even possible?!
although they do temporary dumps in small sizes to create temporary panic in order to buy more cheap coins at the bottom but they will never dump tens of thousands of coins, you should be an idiot to do that!