OPTIMUM FUND TRUST
 
Optimum Large Cap Value Fund
(the “Fund”)
 
Supplement to the Fund’s Prospectus dated July 31, 2026
 
Effective as of November 1, 2026, the following replaces the information in the chart in the Fund’s Prospectus entitled “Fund summaries — Optimum Large Cap Value Fund — Who manages the Fund? — Sub-advisors — Massachusetts Financial Services Company”:
 
Massachusetts Financial Services Company
 
Portfolio managers
Title with MFS
Start date on the Fund
Thomas Crowley
Investment Officer
December 2024
Steve Gorham
Investment Officer
November 2026
 
Effective as of November 1, 2026, the following replaces the second paragraph in the section in the Fund’s Prospectus entitled “Who manages the Funds — Sub-advisors and portfolio managers — Optimum Large Cap Value Fund”:
 
Thomas Crowley, Investment Officer of MFS, and Steve Gorham, Investment Officer of MFS have primary responsibility for the day-to-day portfolio management of MFS’ share of the Fund’s assets. Mr. Crowley and Mr. Gorham have been employed in the investment area of MFS since 2007 and 1992, respectively. Mr. Crowley and Mr. Gorham have held their Fund responsibilities since December 2024 and November 2026, respectively.
 
 
Because everyone's tax situation is unique, you should consult your tax professional about federal, state, local, or foreign tax consequences before making an investment in, or redemption from, the Fund or acting on a distribution check (if applicable).
 
Please keep this Supplement for future reference.
 
This Supplement is dated October 22, 2026.
 
 
OPTIMUM FUND TRUST
 
Optimum Large Cap Value Fund
(the “Fund”)
 
Supplement to the Fund’s Statement of Additional Information dated July 31, 2026
 
Effective as of November 1, 2026, the following will replace the information in the section of the chart entitled, "Portfolio Managers – A. Other Accounts Managed – Optimum Large Cap Value Fund – MFS”:
 
             
Optimum Large Cap Value Fund
  No. of Accounts Total Assets Managed No. of Accounts with Performance-Based Fees Total Assets in Accounts with Performance-Based Fees
MFS
Steve Gorham*
Registered investment companies
8
$18.1 billion
0
$0
Other pooled investment vehicles
6
$2.3 billion
0
$0
Other accounts
15
$11.7 billion
0
$0
Thomas Crowley*
Registered investment companies
9
$52.2 billion
0
$0
Other pooled investment vehicles
2
$5.9 billion
0
$0
Other accounts
16
$7 billion
0
$0
* As of September 30, 2026
 
 
Please keep this supplement for future reference.
 
This Supplement is dated October 22, 2026.