I think bitcoin will still move up even there's no hardfork. Hardfork it cause to slip decision of every investor because they need to choose that will give to them more profits. But of course as we can see bitcoin is still in good value even there's a hardfork. Because it happened before year 2017 that after hardfork bitcoin got new ATH .
hardfork causes the price of bitcoin to rise because people are buying more bitcoin in order to get the equivalent amount of fork coins . though there is also a chance that bitcoin can lost what it already regain because people usually sells both of their fork coins and bitcoin to earn a good income . @op if there is no hardfork , the value of bitcoin can still increase due to the demand that it gets from the public but if there is a hardfork , the value can increase more evenly into an un-usual state .