Why the drop yesterday? Fundamental change or just bear raid?
Just in case this is actually a serious question...
Methinks it is PROBABLY related to these facts:
1) PXYN's contract with the company that has heretofore been responsible for nearly 100% of its sales has not been renewed;
2) PXYN has signed a new contract with a company that no one knows anything about, and is contractually obligated to give this new company 64% of NET REVENUE for any sales the new company generates.