Conn. Gen. Stat. § 42a-9-328
The following rules govern priority among conflicting security interests in the same investment property:
(2) Except as otherwise provided in subdivisions (3) and (4), conflicting security interests held by secured parties each of which has control under section 42a-9-106 rank according to priority in time of:
(B) If the collateral is a security entitlement carried in a securities account; and:
(P.A. 01-132, S. 48.)