bitcoin does not needs exact news to be higher again. its just manipulation of big buyer.
more people buying then selling is the certain reason why bitcoin reach that price so fast.
The price of bitcoin is pure speculative but there are other factors for big investors to invest in it ,first and foremost the news of a derivative market coming up will encourage investors to spend their money in bitcoin and those who follow the market does know how big the market would be in the future and these are the factors that encourage people to invest rather than riding the bull blindly.