SAB Biotherapeutics is standing out among the top three US penny stocks to keep an eye on, as reported by Simply Wall St. This biotech company is making waves in the industry with its innovative approach to developing biotherapeutics. Investors are taking notice of SAB Biotherapeutics as it continues to lead the pack in the penny stock market. With its promising potential for growth and success, SAB Biotherapeutics is definitely a company worth considering for investment opportunities.