Mississippi Code Title 75. Regulation of Trade, Commerce and Investments § 75-9-116

(1) If a person buys a financial asset through a securities intermediary in a transaction in which the buyer is obligated to pay the purchase price to the securities intermediary at the time of the purchase, and the securities intermediary credits the financial asset to the buyer's securities account before the buyer pays the securities intermediary, the securities intermediary has a security interest in the buyer's security entitlement securing the buyer's obligation to pay. A security agreement is not required for attachment or enforceability of the security interest, and the security interest is automatically perfected.

(2) If a certificated security, or other financial asset represented by a writing which in the ordinary course of business is transferred by delivery with any necessary indorsement or assignment is delivered pursuant to an agreement between persons in the business of dealing with such securities or financial assets and the agreement calls for delivery versus payment, the person delivering the certificate or other financial asset has a security interest in the certificated security or other financial asset securing the seller's right to receive payment. A security agreement is not required for attachment or enforceability of the security interest, and the security interest is automatically perfected.