profranda, who knows what drives sellers and buyers? There does seem to be a large selller operating, 20K, 30K, 50K at a time, they wait until the buy volume builds up a bit and then just dump. Thus the yoyo effect. Looks to have been going on for weeks.
With approval of in tube soon (we all hope) and possibly good quarterly sales figures in a few weeks time it's a bit hard to understand this comparatively large selling. Maybe a big holder just wants out and will continue selling until he is finished.
Thankfully there is also some good buying support.
CST Price at posting:
0.0¢ Sentiment: Buy Disclosure: Held