People are hoarding as much bitcoin as they can to get more free coins after the fork.
There are however more things influencing the price. Mainly new people entering. I can see it all around me, the influx is huge.
But the new people do not know there will be fork. So that price rise due to fork is not intentional.
Those new users doesnt know yet the movement but most users really into bitcoin gold. Whereas they could easily earn double or triple the amount once they will sell it. Segwit in november has many speculation so all we have to do is to watch the actual price it would be.