Tex. Prop. Code § 161.052
A fiduciary holding a security in its fiduciary capacity and a bank, trust company, or private banker holding a security as a custodian for a fiduciary, a managing agent, or a custodian may deposit or arrange for the deposit of the security with:
Acts 1983, 68th Leg., p. 3718, ch. 576, Sec. 1, eff. Jan. 1, 1984.