Post-Effective Amendment to Post-Effective Amendment by Investment Company (Form 485BXT)

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM N-1A

File No. 333-104654
File No. 811-21335

This filing relates solely to the Optimum Short Duration Fund and the prospectus and statement of information for the Registrant's other series of the Registrant are not amended or superseded hereby.

This Post-Effective Amendment No. 38, Amendment No. 41 to the Registrant's Registration Statement on Form N-1A is being filed under Rule 485(b)(1)(iii) and incorporates by reference from Post-Effective Amendment No. 37, Amendment No. 40 ("PEA 37") filed on April 20, 2026 (i) the Prospectus for Optimum Short Duration Fund; (ii) the Statement of Additional Information for Optimum Short Duration Fund; and (iii) the Part C. This Amendment is being filed for the purpose of delaying the effectiveness of PEA 37 until July 30, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Philadelphia and Commonwealth of Pennsylvania on this 2nd day of July, 2026.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated: