PositiveID (OTCMKTS:PSID – Get Rating) and Berkeley Lights (NASDAQ:BLI – Get Rating) are both medical companies, but which is the better investment? We will compare the two businesses based on the strength of their earnings, risk, profitability, dividends, analyst recommendations, valuation and institutional ownership. Institutional & Insider Ownership 69.8% of Berkeley Lights shares are held […]