I would argue that the value of Bitcoin is influenced by the market response to Bitcoin itself, depending on how the market responds to Bitcoin users or Bitcoin miners themselves.
If the market response to Bitcoin rises then the price will go up, and vice versa if the market response to Bitcoin down then the price will come down.
Many factors affect the value of Bitcoin but the major factor is the negative statements and news. With this negative news Bitcoin affects up to some extent and not permanently but for the time being the value alters. Similarly the positive news about the Bitcoin encourages people to take the ways straight towards the market.
The CEOs and founders of large companies and the reputed companies say positively about the Bitcoin because they know better the future world is of cryptocurrency and this contribute to the increase in demand for people.
Negative statements and news do play role in decreasing the value of BTCs but only at that places where there s no internet access because they dont have any other source from where they can get confirmation, so it may also happen in the result that they will make a panic selling but the people who have internet wouldnt do something like that because they would have a bunch of forums from where they can get confirmation.