The current ATH for Bitstamp is $2980. We got very close to it yesterday, but the price was going way too quickly and was not sustainable. I think that a new number may be possible, very shortly. Therefore:
New ATH: July 24. 2017 (even if entries can't have the same date?).
Reason: BIP91 activates in ~250 blocks and the reached price yesterday.
In case that some people have not noticed it yet: