DATUM ONE SERIES TRUST
50 S. LaSalle Street
Chicago, IL 60603
October 1, 2020
VIA EDGAR CORRESPONDENCE
United States Securities and Exchange Commission
Attn: Ryan Sutcliffe
100 F Street, N.E.
Washington, D.C. 20549
Re: Datum One Series Trust (the "Registrant")
Registration Statement on Form N-1A
File Nos. 333-237048, 811-23556
Dear Mr. Sutcliffe:
Pursuant to Rule 461(a) under the Securities Act of 1933, the undersigned hereby respectfully request that the effectiveness of the above-referenced registration statement be accelerated so that it will become effective by 5:00 pm Eastern time on October 2, 2020 or as soon thereafter as practicable.
Please direct any questions concerning this request for accelerated effectiveness to Jessica Reece of Ropes & Gray LLP at (617) 235-4636.
Very truly yours,
DATUM ONE SERIES TRUST
/s/ Toni M. Bugni
Toni M. Bugni
Secretary
FORESIDE FINANCIAL SERVICES, LLC
/s/ Mark Fairbanks
Mark Fairbanks
Vice-President