Bearwhale is a trader with a substantial portfolio, takes a bearish approach (believes in a downward price action) on cryptocurrency. The nickname ‘BearWhale’ was given to a trader back in 2014, who attempted to sell 30,000 Bitcoins at the then price of $300 per coin, for a total of $9 million.

This massive sell was executed through Bitstamp and was so enormous that it distorted the Bitcoin markets and momentarily erected a wall, causing the price of Bitcoin to stall at $300 for hours while all 30,000 of the seller's coins began selling.