Cal. Fin. Code § 18268

An industrial loan company that has investment certificates outstanding shall not lend in the aggregate more than 5 percent of its capital stock and surplus not available for dividends as provided in Section 18319 upon the security of the stock of any one corporation and that stock may not exceed 10 percent of the outstanding stock of the corporation, or upon the security of the bonds of any one obligor except bonds of the United States or for the payment of which the credit of the United States is pledged, bonds of the State of California, or for the payment of which the credit of the State of California is pledged, and any security authorized in writing by the commissioner or any security authorized by rule of the commissioner.