As I see it, saying that "bitcoin will continue to rise until the end of the year" is an understatement. We don't know that for sure, there are still many factors that could turn the tide around anytime soon and remember, Christmas is just around the corner and the chances that people need a huge amount of money is high so that they can prepare for a once in a year occasion. This could result in people selling some of their bitcoins and increasing the supply of it in the market and it would potentially decrease the price of bitcoin at that span of time.