N.D. Cent. Code § 26.1-05-23
A domestic life insurance company must physically deposit with the commissioner, on the date on which the company files its annual statement, securities of a value equivalent to the net value of all policies the company has in force. The securities must be of a kind specified in section 26.1-05-19. The company, in lieu of the physical deposit, may file, and the commissioner shall accept, a detailed, verified statement setting forth with sufficient particularity a list of the items of security held by the company in an amount equivalent to the net value of all policies in force. The securities specified in the list, although retained by the company, must be kept separate and distinct from the other securities of the company and must be held as a deposit for the policyholders of the company under this section. This section does not prevent or prohibit a domestic life insurance company from depositing with the commissioner securities in an amount to exceed the cash value of its policies.
N.D.C.C. § 26.1-05-23