ARCT - Arcturus: Developing A Covid-19 Vaccine But Too Little Too Late April, 27 2021 02:38 PM Arcturus Therapeutics Ltd. Arcturus has a Covid-19 vaccine in development, funded by the Singapore government. It has shown some decent results in early trials. However, the market is underwhelmed by these results. For further details see: Arcturus: Developing A Covid-19 Vaccine But Too Little, Too Late