Cal. FIN § 1905

Any bank may, with the consent of the commissioner, upon such conditions and under such regulations as the commissioner may prescribe, invest in the stock of one or more corporations organized under the laws of any state of the United States (other than a corporation organized under the laws of this state for the purposes of transacting business under the provisions of Article 1 (commencing with Section 1850) and principally engaged in international or foreign banking, or banking in a dependency or insular possession of the United States either directly or through the agency, ownership, or control of local institutions in foreign countries, or in dependencies or insular possessions of the United States; provided, however, that the stock at the time of the acquisition would constitute a permissible investment for a national bank; and provided, further, that the aggregate amount of stock held in all corporations engaged in business of the kind described in this chapter shall not exceed 10 percent of the subscribing bank’s shareholders’ equity. Nothing in this section shall be construed in any way to limit the powers conferred by Section 1864.