Section 151.130 - When must I settle a securities transaction?(a) You may not effect or enter into a contract for the purchase or sale of a security that provides for payment of funds and delivery of securities later than the latest of:(1) The number of business days in the standard settlement cycle followed by registered broker dealers in the United States after the date of the contract. The number of business days in the standard settlement cycle shall be determined by reference to paragraph (a) of SEC Rule 15c6-1, 17 CFR 240.15c 6-1(a) ;(2) The fourth business day after the contract, if the contract involves the sale for cash of securities that are priced after 4:30 p.m. Eastern Standard Time on the date the securities are priced and are sold by an issuer to an underwriter under a firm commitment underwritten offering registered under the Securities Act of 1933, 15 U.S.C. 77a , et seq., or are sold by you to an initial purchaser participating in the offering;(3) Such time as the SEC may specify pursuant to an order of exemption in accordance with paragraph (b)(2) of SEC Rule 15c6-1; or(4) Such time as the parties expressly agree at the time of the transaction. The parties to a contract are deemed to have expressly agreed to an alternate date for payment of funds and delivery of securities at the time of the transaction for a contract for the sale for cash of securities under a firm commitment offering, if the managing underwriter and the issuer have agreed to the date for all securities sold under the offering and the parties to the contract have not expressly agreed to another date for payment of funds and delivery of securities at the time of the transaction.(b) The deadlines in paragraph (a) of this section do not apply to the purchase or sale of limited partnership interests that are not listed on an exchange or for which quotations are not disseminated through an automated quotation system of a registered securities association. 76 FR 49008 , Aug. 9, 2011, as amended at 83 FR 26349 , June 7, 2018