(a) Security interest when person buys through securities intermediary. A security interest in favor of a securities intermediary attaches to a person's security entitlement if:

1. (1) the person buys a financial asset through the securities intermediary in a transaction in which the person is obligated to pay the purchase price to the securities intermediary at the time of the purchase; and
2. (2) the securities intermediary credits the financial asset to the buyer's securities account before the buyer pays the securities intermediary.

(c) Security interest in payment against delivery transaction. A security interest in favor of a person that delivers a certificated security or other financial asset represented by a writing attaches to the security or other financial asset if:

1. (1) the security or other financial asset:

   1. (A) in the ordinary course of business is transferred by delivery with any necessary indorsement or assignment; and
   2. (B) is delivered under an agreement between persons in the business of dealing with such securities or financial assets; and
2. (2) the agreement calls for delivery against payment.