"the Beluga of Groups" fell in price on $500 million after five-day growth

That happens to actions of companies. Cost "the Beluga of Groups" at PUBLIC JOINT-STOCK COMPANY MOSKOVSKY EXCHANGE in five days trebled, to $1,3 billion, and on February 19 fell to $500 million. Actions grew including on hearings about ridges. On February 15 one common stock "Beluga of Groups", one of the largest suppliers and producers of alcohol, at PUBLIC JOINT-STOCK COMPANY MOSKOVSKY EXCHANGE cost 2200 rubles. On February 18 at the time of closing of auctions its price reached 6204 rubles apiece. For incomplete week of paper rose in price three times, but on Friday fell off and by 18:00 bargained at the level of 3722 rubles (-40,1% to the closing price). What happens to actions of companies? .