I don't see how the increase in price had anything to do with the halving. In this graph I read a very stable price before and after halving, followed by an exponential bubble, a collapse, and a new normal.
Since then the price went up, and down, and the past year went up again to end on the current 400+ (although it has been higher in the past year). Everybody expecting a large effect of the halving must have influenced the higher price, so I see no reason for an increase after the halving. If it happens months later, it is the "normal" variation again.
Now that is interesting if we follow that pattern we might not see much movement until months after the halving.
I doubt that though Bitcoin is so much bigger now and so hype driven ppl will buy more and more just trying to make quick money.