Sec. 21.610. CHANGE IN VOTING REQUIREMENTS. The affirmative vote or concurrence of shareholders required for approval of an action that is required to be submitted to a vote of the shareholders under this subchapter may be increased but not decreased under Section 21.365. Acts 2003, 78th Leg., ch. 182, Sec. 1, eff. Jan. 1, 2006. SUBCHAPTER N. PROVISIONS RELATING TO INVESTMENT COMPANIES