There isn't "stock" in the traditional sense, but considering all of these AI companies are running on MASSIVE amounts of debt, to the point the banks can't loan any more without offloading the risk to outside investors, which they have been doing at an unprecedented scale. So anything that would normally help drive up a stock price would also help the banks sell off the AI companies' debt allowing them to loan more money to the AI companies.

there's more than one company doing this, they're doing more than just this, and they're all basically in cahoots

eta: the original reply was meant more generally, though i admit i made that clear as mud. however, it should be read as a general statement, and not just about ai companies but the new era of grift hyperreality that we live in.