If, at or after the time of the transformation, it appears, either from the last preceding annual report by such insurer to the commissioner, or from an investigation made by the commissioner, that the present value of the contributions to be received from the holders of policies on the assessment plan, together with all assets owned by the insurer that have been accumulated from assessments paid by members on that plan, are not equal to the present value of the benefits, including all matured liabilities, to be derived by members under the assessment plan, the insurer shall set aside and maintain a fund for the purpose set forth in section 11443. Such fund together with the present value of contributions and assets, shall equal the present value of such benefits.