Been watching this stock for a while. When it hit no bid I dont recall there being many 1s on the ask. Perhaps around 300m of 1's were available (and I imagine a lot got taken off when volume came in the other day).
Not saying this isnt a heavy beast, but I dont believe there a billions of 1s out there.
There's also been a heavy amount of volume selling into the 2s. Imagine a fair few 1s have been already sold.