(a) 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 7-106, 9-104, 9-105, 9-106, or 9-107.
(b) 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 Section 7-106, 9-104, 9-105, or 9-107 when the secured party obtains control and remains perfected by control only while the secured party retains control.”
(c) Investment property: time of perfection by control; continuation of perfection. — A security interest in investment property is perfected by control under Section 9-106 from the time the secured party obtains control and remains perfected by control until:
(1) the secured party does not have control; and
(2) one of the following occurs:
(A) if the collateral is a certificated security, the debtor has or acquires possession of the security certificate;
(B) if the collateral is an uncertificated security, the issuer has registered or registers the debtor as the registered owner; or
(C) if the collateral is a security entitlement, the debtor is or becomes the entitlement holder.
72 Del. Laws, c. 401, § 1; 74 Del. Laws, c. 332, §§ 57, 58.