Mississippi Code
Subpart 2 - Perfection
§ 75-9-314. Perfection by control

A security interest in investment property, deposit accounts, letter-of-credit rights, electronic chattel paper, or electronic documents may be perfected by control of the collateral under Section 75-7-106, 75-9-104, 75-9-105, 75-9-106 or 75-9-107.
A security interest in deposit accounts, electronic chattel paper, letter-of-credit rights, or electronic documents is perfected by control under Section 75-7-106, 75-9-104, 75-9-105 or 75-9-107 when the secured party obtains control and remains perfected by control only while the secured party retains control.
A security interest in investment property is perfected by control under Section 75-9-106 from the time the secured party obtains control and remains perfected by control until:
If the collateral is a certificated security, the debtor has or acquires possession of the security certificate;
If the collateral is an uncertificated security, the issuer has registered or registers the debtor as the registered owner; or
If the collateral is a security entitlement, the debtor is or becomes the entitlement holder.

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