OPK OPKO and Pfizer Enter into Global Agreement for OPKO’s Long-Acting Human Growth Hormone (hGH-CTP) https://finance.yahoo.com/news/opko-pfizer-enter-global-agreement-130000473.html stockcharts.com/c-sc/sc?s=OPK&p=D&b=5&g=0&i=0&r=1418654173436