(a) Except as provided by Section 815.302 or 815.303, the comptroller is the custodian of the securities, bonds, and funds of the retirement system.
(b) The comptroller shall pay money from the funds of the retirement system on warrants drawn by the comptroller supported only on vouchers signed by the executive director and the presiding officer of the board of trustees or their authorized representatives.
(c) The comptroller annually shall furnish to the board of trustees a sworn statement of the amount of the retirement system's assets in the comptroller's custody.
(d) The board of trustees may, in the exercise of its constitutional discretion to manage the assets of the retirement system, select one or more commercial banks, depository trust companies, or other entities to serve as custodian of all or part of the retirement system's assets.