If the whales are secretly buying up Bitcoin than I will buy Bitcoin at the current market rate. Even if it goes to 2500$. Gives me sum hope in the crypto space. Only if I find out they are buying through forums etc.
From my opinion, bitcoin price won't go to $2500 because many peoples using bitcoin and it has much demands.
You will never know when some whales accumulating bitcoin in small amounts but frequently.
Once you noticed, the price of bitcoin will already expensive than the average price.