CLCD ZSAN can't be compared. CLCD market cap $740m, ZSAN market cap $13m. CLCD trading 9 times Cash, ZSAN tradimg 50% under Cash. Ownership: CLCD 61%, ZSAN 75% (about 4m Float).
although balance sheet is solid, PPS seems to me overbought if you compare it to their "only" 100m assets and net lose more than doubled so far ($42m vs $20m). while checking financials ratios, cap, market potential, and risk/reward i find ZSAN to have more potential ROI.
Don't forget there is never 100% guarantee w/bio(s). P3: (Q1 2017).
My posts are my opinion and should not be used as investment advice. Make your own decisions in your stock trades.