In my opinion it is only the demand that is making it stable or non stable .
Here you can see clearly that sometimes bitcoin rise more than what we expect , that is only due to the demand , the price of bitcoin is fully​ depends upon the buy and sell ( I mean your point is right at much extent ) .
No doubt that currently price is stable which is only due to the normal demand of bitcoin in the market and still no one new service is announcing to enter in bitcoin , and also a new conversation is going on bitcoin in India whether to accept or ban bitcoin in India .
Hope everything gone ok and price will increase .