Okla. Stat. tit. 36, § 36-1706: Excess deposits

An insurer may so deposit cash or eligible securities in an

amount exceeding its deposit required or otherwise permitted under

this Code, for the purpose of absorbing fluctuations in the value of

securities held in its deposit, and to facilitate the exchange and

substitution of securities deposited. During the solvency of the

insurer any such excess deposit or part thereof shall be released to

the insurer upon its request. During the insolvency of the insurer

such excess deposit shall be released only as provided in Section

1707 of this article.