§ 9-314. PERFECTION BY CONTROL.
A security interest in investment property, deposit accounts, letter-of-credit rights, or electronic chattel paper may be perfected by control of the collateral under Section 9-104, 9-105, 9-106, or 9-107.
A security interest in deposit accounts, electronic chattel paper, or letter-of-credit rights is perfected by control under Section 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.
(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.