They can buy 20 percent of the average daily volume, but they can only buy on the bid. It'd certainly have been possible for more today, but it's hard to try to dive into their head.
DISCLAIMER: I am a dirty, rotten penny investor. I am not compensated by any stock. I've asked them to pay me, they refuse. I buy stock on the open market. I sell it there. I like money. I am greedy. I am under the care of a psychiatrist.