Texas Insurance Code - INS § 424.155. Collateral Requirements

(a) While a transaction under this subchapter is outstanding, the insurer or the insurer's agent or custodian shall maintain, as to acceptable collateral received in the transaction, either physically or through the book-entry system of the Federal Reserve, Depository Trust Company, Participants Trust Company, or another securities depository approved by the commissioner:

(b) The amount of collateral required for repurchase, reverse repurchase, and securities lending transactions is the amount required under the Purposes and Procedures Manual of the securities valuation office or a successor publication.