Mississippi Code Title 75. Regulation of Trade, Commerce and Investments § 75-9-301

(1) Except as otherwise provided in subsection (2), an unperfected security interest is subordinate to the rights of:

(2) If the secured party files with respect to a purchase money security interest before or within twenty (20) days after the debtor receives possession of the collateral, he takes priority over the rights of a transferee in bulk or of a lien creditor which arise between the time the security interest attaches and the time of filing.

(3) A “lien creditor” means a creditor who has acquired a lien on the property involved by attachment, levy or the like and includes an assignee for benefit of creditors from the time of assignment, and a trustee in bankruptcy from the date of the filing of the petition or a receiver in equity from the time of appointment.

(4) A person who becomes a lien creditor while a security interest is perfected takes subject to the security interest only to the extent that it secures advances made before he becomes a lien creditor or within forty-five (45) days thereafter or made without knowledge of the lien or pursuant to a commitment entered into without knowledge of the lien.