Stock price when the opinion was issued
Good question. The answer is that it doesn't matter, because the market response is extraordinary for these things. Anybody's evaluation of it doesn't tell you why this stock should be up 25-30% in a day for such a large company.
So the analysis doesn't matter. He's more interested in the market response, which tells you about the speculative nature of the market we're now in. And it could last days, months, maybe years. AI is still very early, and everybody gets really excited about it.