Whales will always be there to pump the price. But if you are saying that they are manipulating it and selling it at later time to profit is highly unlikely. Again this is not 2013, this is not a bubble. This are legit investors coming from Japan market. Trading volumes also indicate that Japan is leading the way. If whales want to sell, then they can do it with minimal impact to the price. Because we have a country now that is supporting the bitcoin ecosystem. And even if whale sells, new investor will be showing up because bitcoin price has been more stable and trusted. Australia, China, India, Switzerland are also showing good interest to legalized bitcoin as well. So no, manipulation of price of bitcoin now is very difficult specially for the whales.