Oddly enough, I own all 3 of these.
I sold some of my OSU @ Friday's open. I asked for .39 & got .40 (no complaints). This one had a huge saucer bottom basing pattern, with increasing volume on the initial move up. I'm keeping the rest of my shares - hoping for another leg up.
I may sell some of my EPO because it appears to be stalling around resistance.
Bought WS a few days ago because it was one of the few silver stocks that hadn't yet run, and didn't look horrible technically. I'll wait for a pop before selling this one.