DFFN - .477 Pre-market now at .58/.609......have been holding this for a while. Diffusion Pharma Reports FDA Approval Of Commencement Of On-Ambulance Phase 2 Trial For Treatment OF Acute Stroke https://stockcharts.com/c-sc/sc?s=DFFN&p=D&b=5&g=0&i=t05503843189&r=1536758400038