X0101 EFFECT 33 LIVE 2020-10-09 10:00:00

N-1A

0001806095 Datum One Series Trust 333-237048 S000068601 Polar Capital Emerging Market Stars Fund C000219507 Institutional Class Shares S000068908 Phaeacian Global Value Fund C000220165 Institutional Class Shares S000068909 Phaeacian Accent International Value Fund C000220166 Institutional Class Shares