A WSJ report says that day by day exchanging records discharged by LedgerX - a startup electronic market for Bitcoin subsidiaries - demonstrate that a unidentified merchant/dealers purchased Bitcoin call alternatives adding up to just shy of $1 million. 

The call alternatives lapse on 28 December 2018, betting that Bitcoin will hit $50,000. The call alternatives bet gives the dealer/brokers the privilege to purchase 275 Bitcoins at $50,000 upon lapse date. 

LedgerX CEO, Paul Chou, declined to distinguish who was behind the buy - yet said "it's not an individual, how about we put it that way". 

For Bitcoin to reach $50,000 from the present levels, it would mean a bounce of more than 190%. Things being what they are, that is peanuts contrasted with the >1,500% hop this year, no?