3. General Rule: Priority of Security Interest Perfected by Control. Under paragraph (1) [Maine cite subsection (1)], a secured party who obtains control has priority over a secured party who does not obtain control. The control priority rule does not turn on either temporal sequence or awareness of conflicting security interests. Rather, it is a structural rule, based on the principle that a lender should be able to rely on the collateral without question if the lender has taken the necessary steps to assure itself that it is in a position where it can foreclose on the collateral without further action by the debtor. The control priority rule is necessary because the perfection rules provide considerable flexibility in structuring secured financing arrangements. For example, at the "retail" level, a secured lender to an investor who wants the full measure of protection can obtain control, but the creditor may be willing to accept the greater measure of risk that follows from perfection by filing. Similarly, at the "wholesale" level, a lender to securities firms can leave the collateral with the debtor and obtain a perfected security interest under the automatic perfection rule of Section 9-309(a)(10) [Maine cite section 9-1309, subsection (1), paragraph (j)], but a lender who wants to be entirely sure of its position will want to obtain control. The control priority rule of paragraph (1) [Maine cite subsection (1)] is an essential part of this system of flexibility. It is feasible to provide more than one method of perfecting security interests only if the rules ensure that those who take the necessary steps to obtain the full measure of protection do not run the risk of subordination to those who have not taken such steps. A secured party who is unwilling to run the risk that the debtor has granted or will grant a conflicting control security interest should not make a loan without obtaining control of the collateral.

As applied to the retail level, the control priority rule means that a secured party who obtains control has priority over a conflicting security interest perfected by filing without regard to inquiry into whether the control secured party was aware of the filed security interest. Prior to the 1994