 Pro-Dex NASDAQ:PDEX and Atrion NASDAQ:ATRI are both small-cap medical companies, but which is the superior investment? We will contrast the two companies based on the strength of their valuation, earnings, profitability, risk, institutional ownership, analyst recommendations and dividends. Analyst Ratings This is a summary of current ratings for Pro-Dex and Atrion, as provided by MarketBeat.com. ... 