Expand All Rule 430. Partial Delivery of Securities to Customers on C.O.D. Purchases Rule 431. Margin Requirements Rule 432. Daily Record of Required Margin Rule 434. Required Submission of Requests for Extensions of Time for Customers Book traversal links for Margins (Rules 430-434) ‹ Rule 424. Reports of Options Up Rule 430. Partial Delivery of Securities to Customers on C.O.D. Purchases ›