I certainly had that thought too, and did consider playing it, but:
1) You're riding what, the peak between 1.11 and the trough at 1.04? That $0.07 is gonna feel real stupid when it peaks at $2.00++ and you forgot your ticket on the kiddie slide.
2) In all reality, there's no Bill Gates paying any attention to our little $1 game, he knows Amyris will go up in time. Even if 10 days doesn't happen this round, NASDAQ will just give them another 180 days and it'll get there eventually. Amyris has more intellectual property and big backers than any other company under $5.
As far as who is keeping it above a $1? A bunch of people slowly buying up more and more shares as it becomes more and more obvious that Amyris is about to blow up, and it's as simple as that.