I don't consider myself a whale, LOL! I invest a percentage of my long term growth into BTC. There is no amount that I have seen yet (not even close) that would cause me to sell my BTC portfolio. I may even leverage other investments during those times the price dives a few hundred because I stand ready for using "timing" to my advantage. I post this in this thread because you can't answer for a whale unless you know who he is. Big investor, just a luck early adopter, early big mining operator, etc ... ? Depending upon the lifestyle of the "whale" it might become apparent why he is not dumping coins.
Methinks, we could still guesstimate who is a big whale. Early big mining operators are the same as early adopters just because being early means circa 2009-2010 when there hadn't yet been an established market for Bitcoin. Early adopters couldn't buy many bitcoins back in those days, they could only mine the coins themselves. Mt. Gox was launched in July 2010, but it didn't rise to fame at once, I think. In this manner of thinking, big investors also don't pass as really big whales, maybe, only a couple of them such as the Winklevoss twins. Therefore, the big whales are mostly early adopters, and this partially explains why they are not selling their coins. They want to be the new wealthy elite when Bitcoin takes over the world, and their bitcoins become money on their own.
What I find amazing along this line of questioning is when I read that 60 % of coins mined have NEVER moved. Don't know if its true, but that amazes me more than whales not dumping coins.
Yes, I also heard this.