The reason for the negative trend was the increased demand among those who buy crypto currency exclusively for resale, there were futures rates, which entail a decrease in value. After bitcoin brought many fabulous profits, experienced investors fixed it. At the same time, a huge stream of dilettantes burst into the market, which easily succumb to panic and contribute to the collapse of the crypto-currency. Experienced players to lower the cost at hand, they are in a hurry to buy a stock at a lower cost. That's why big players develop panic, skilfully manipulating the market.