N.C. Gen. Stat. § 25-9-314

(1) 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 G.S. 25-7-106, 25-9-104, 25-9-105, 25-9-106, or 25-9-107.

(2) Specified collateral: time of perfection by control; continuation of perfection. - A security interest in deposit accounts, electronic chattel paper, letter-of-credit rights, or electronic documents is perfected by control under G.S. 25-7-106, 25-9-104, 25-9-105, or 25-9-107 when the secured party obtains control and remains perfected by control only while the secured party retains control.

(3) Investment property: time of perfection by control; continuation of perfection. - A security interest in investment property is perfected by control under G.S. 25-9-106 from the time the secured party obtains control and remains perfected by control until: The secured party does not have control; and

(4) One of the following occurs: If the collateral is a certificated security, the debtor has or acquires possession of the security certificate;

(5) If the collateral is an uncertificated security, the issuer has registered or registers the debtor as the registered owner; or

(6) If the collateral is a security entitlement, the debtor is or becomes the entitlement holder.