Haw. Rev. Stat. § 516-42: Investment of reserves.

The Hawaii housing finance and development corporation may invest any funds held in reserves or sinking funds, or any funds not required for immediate disbursement, in property or securities in which savings banks may legally invest funds subject to their control. No provisions with respect to the acquisition, operation, or disposition of property by other public bodies are applicable to the corporation under this part unless otherwise specifically provided by law.