In theory. You can never guarantee the gold’s rule applicability on Bitcoin. The price increase is entirely dependent on how much people are willing to pay for something that is limited. But, as you can look in the chart above, the process seems to have proven successful twice. Also, it can be seen that the price jump is not immediate. For example, after the July 2016 halving, the ICO boom happened at the end of 2017.
So, what happens after this month’s halving, can’t really be predicted. Your money is in your hands. If you plan to invest, just do some self-research.