Oregon Revised Statutes Insurance § 731.616

(1) For the purpose of determining the sufficiency of its deposit in this state the assets of the insurer on deposit shall be valued at current market value.

(2) If assets deposited by an insurer are subject to material fluctuations in market value, the Director of the Department of Consumer and Business Services, in the discretion of the director, may require the insurer to deposit and maintain on deposit additional assets in such amount as reasonably is necessary to assure that the deposit at all times will have a market value of not less than the amount specified under or pursuant to the law by which the deposit is required.

(3) If for any reason the current market value of such assets falls below the amount of deposit required of the insurer, the insurer shall promptly deposit other or additional assets eligible for deposit in an amount sufficient to cure the deficiency. The insurer has 30 days in which to cure the deficiency after notice thereof from the director.