 Sutro Biopharma NASDAQ:STRO and Adverum Biotechnologies NASDAQ:ADVM are both small-cap medical companies, but which is the better investment? We will compare the two companies based on the strength of their earnings, valuation, dividends, risk, profitability, analyst recommendations and institutional ownership. Profitability This table compares Sutro Biopharma and Adverum Biotechnologies net margins, return on equity and ... 