The currencies of the world are affected by many different parameters such as politics, economy, wars. The value of the money also shows up and down according to these parameters.
What are the parameters that affect bitcoin?
The parameters that affects bitcoins are developers of coins, innovations of developers, mass adoption, comunity support for better of bitcoins in the future.
Investors who put the money on bitcoin and blockchains technology of bitcoins, it is part fundamental of bitcoins and that are affects to bitcoin will be survive or not.
But for movement bitcoin's price is short term, it is depend on the most traders and speculator.