Texas Finance Code - FIN § 184.105. Engaging in Commerce Prohibited

(a) Except as otherwise provided by this subtitle or rules adopted under this subtitle, a state trust company may not invest its funds in trade or commerce by buying, selling, or otherwise dealing goods or by owning or operating a business not part of the state trust business, except as necessary to fulfill a fiduciary obligation to a client.

(b) Under this section, engaging in an approved financial activity or an activity incidental or complementary to a financial activity, whether as principal or agent, is not considered to be engaging in commerce.