Some here remember the infamous bearwhale (who dumped 30K btc at $330 in 2014).
Who knows why? maybe needed 10 mil back then

, but it is $1.4 bil now, haha.
Here is a reference, but I remember it as it was yesterday (crazy action):
https://news.bitcoin.com/8-years-ago-today-bitcoin-traders-slayed-the-infamous-bear-whale-who-dumped-30000-btc-in-a-single-trade/EDIT: that guy crawled back to the market at $1000, lol.
EDIT2: Another point to make is that although the community rightfully celebrated, the price dipped to around $170-175 in about three months and then revisited around $200, many months later in Aug 2015 or thereabout, but the bearwhale did NOT buy that dip.