N.Y. Uniform Commercial Code § 8-106
Section 8--106. Control.
(b) A purchaser has "control" of a certificated security in registered form if the certificated security is delivered to the purchaser, and:
(c) A purchaser has "control" of an uncertificated security if:
(d) A purchaser has "control" of a security entitlement if:
(3) another person, other than the transferor to the purchaser of an interest in the security entitlement: