(1) Securities, other than those referred to in RCW
48.12.170, held by an insurer shall be valued, in the discretion of the commissioner, at their market value, or at their appraised value, or at prices determined by him or her as representing their fair market value.
(2) Preferred or guaranteed stocks or shares while paying full dividends may be carried at a fixed value in lieu of market value, at the discretion of the commissioner and in accordance with such method of computation as he or she may approve.
(3) The stock of a subsidiary of an insurer shall be valued on the basis of the greater of (a) the value of only such of the assets of such subsidiary as would constitute lawful investments for the insurer if acquired or held directly by the insurer or (b) such other value determined pursuant to rules and cumulative limitations which shall be promulgated by the commissioner to effectuate the purposes of this chapter.
(4) The commissioner has full discretion in determining the method of calculating values according to the rules set forth in this section, and consistent with such methods as then adopted by the National Association of Insurance Commissioners.