On October 1, 2018, Cboe C2 Exchange, Inc. (“C2”) filed with the Securities and Exchange Commission (“Commission”), pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (“Act”) ^[1] and Rule 19b-4 thereunder,^[2] a proposed rule change to allow the Post Only order instruction on complex orders that route to its electronic book.

The proposed rule change was published for comment in the Federal Register on October 16, 2018.^[3] On November 20, 2018, C2 filed Amendment No. 1 to the proposal.^[4] On November 27, 2018, pursuant to Section 19(b)(2) of the Act,^[5] the Commission designated a longer period within which to approve the proposed rule change, disapprove the proposed rule change, or institute proceedings to determine whether to disapprove the proposed rule change, as modified by Amendment No. 1.^[6] On December 14, 2018, C2 filed Amendment No. 2 to the proposal.^[7] The Commission received no comment letters on the proposed rule change.

As of January 14, 2019, pursuant to Section 19(b)(2)(D) of the Act,^[8] the proposed rule change (SR-C2-2018-021), as modified by Amendments No. 1 and 2, was deemed to have been approved by the Commission.