I think there no is no hard fork happen yet since price of bitcoin is rising now. Maybe a lot of us thinks that Hard Fork will happen on October 25, 2017. It is dropping because some of us are panic to lose their bitcoin if bitcoin price will drop.
For your information hard fork happened on October 25, 2017 you can search for bitcoin gold on coinmarketcap, it is one proof that hard fork have been finished already. Price movement and forking of bitcoin is not related with each other and a rising price ain't sufficient reason to say that hard fork has not occurred. Price dropping is a normal occurrence in bitcoin's movements when FUD's are spread out specially at times when one can easily insight uncertainty on Bitcoin.