Joiners No joiners today. Leavers No leavers today. What’s cooking in the IPO kitchen? ATOM headquartered in Leeds, focussed on the large-scale production of green hydrogen and ammonia intends to join AIM towards the end of the year. ATOME intends to be spun-out from AIM-listed President Energy Plc, an oil and gas company which has incubated and financially supported ATOME to date, by way of a dividend in specie and flotation. Devolver Digital to join AIM, an award-winning digital video games pu ....