I think the upcoming network split in October is the elephant in the room here. I think that if the "2X" part in SegWit2X launches successfully and without any noteworthy incidents, the moon is the limit. It may also grow if the 2X-part is dropped.

Currently, neither of those are on the trajectory, currently it seems like we'll have a network chain split, and it's going to be much worse than the "Bitcoin Cash"-split (some people withdrew their bitcoins from the exchanges to make sure they would possess the cash-part of the bitcoin cash, some exchanges closed down withdrawals/deposits just to make sure, except for that it really was a non-event).

There will be no replay protection (so a signed transaction will be valid at both chains unless the coin owner has gone through hoops to make sure to split his coins), "ordinary folks" will possibly have no idea which side of the chain split their wallet happens to be at, and people will fanatically scream that their chain is the one and only proper Bitcoin chain.

Much can happen before October, though - and I believe markets will react swiftly on positive or negative news regarding the upcoming split.