from january 2018, bitcoin price is always changing, a suddenly increased but after a second deep dropped will surly exist. it is the vise versa of bitcoin price last year (2017). until now the price of bitcoin from january upto now (june) is still dropping. so i was wondering if theres a group of people behind this bitcoin price drop?
Yes, if those person have some huge Bitcoin in their hands they can actually make a lot of manipulation about since because crypto market is so decentralized.