(a) An insurer may invest in the stocks of other solvent insurers formed under the laws of this or another state, which stocks meet the applicable requirements of §§ 1310 (preferred or guaranteed stock) and 1311 (common stocks) of this title.
(b) With the Commissioner's advance written consent an insurer may acquire and hold the controlling interest in the outstanding voting stock of another stock insurer formed under the laws of this or another state. All stocks under this subsection shall be subject to the limitation as to amount as provided in § 1313 of this title. The Commissioner shall not give his or her consent to any such acquisition if the Commissioner finds that it would not be in the best interests of the insurers involved, or of their respective policyholders or stockholders, or that such acquisition would materially tend to lessen competition or to result in any monopoly in the insurance business.