Honestly, I read alot of threads here yet I can't understand how Fork affects much the price of the Bitcoin. Then, what was it again? Thanks! 
This article will give you a lot of knowledge about the hardfork. http://www.investopedia.com/terms/h/hard-fork.asp
The hardfork gives the more improvement to the bitcoin network just like what already did by segwit to make the block of the bitcoin network become faster.
But I'm disappointed about the fact that majority of the holders just wanna to earn the fork coin. In the bitcoin fork, it can be called as the new coin that will be applied new rules. But i'm not an expert in this section.