Whales are whales because they hodl 
Moreover they know that if they'd dump their big bags they'd crash the price and get little in return. And finally, they are rich, they don't NEED to dump.
Even if they are rich, they would still dump their bags in the future. Whales are whales just because they have a lot of money invested, dumps at the right time and rebuys if they want also at the right time. For now they are waiting before dumping because it still has a potential to grow but soon, we will see them dump their stash slowly but surely after all that's how they do it. Moreover they know that if they'd dump their big bags they'd crash the price and get little in return. And finally, they are rich, they don't NEED to dump.