sj- I follow your model for my homerun hopefuls, but with this drop have felt my position is at a max so have not added here. That said, I do agree with buying more at this level for the long term. I have another holding in a similar situation which I have followed a long time, has great science, but hit the stock price with a share release. If you want to investigate elsewhere look at psdv. Buy under 2.25. I'm not a pumper or have any connection- just an individual investor with a micro bio BS, 20+ years of med work and research, and 2 kids in college. I am trying to pay them through and retire with enough.