ATS-N/MA N 0000310607-21-000003 0000310607 XXXXXXXX 013-00105 CBX This Material Amendment to Form ATS-N for CBX provides for the addition of three (3) crossing sessions to the ATS (1) the CBX Conditional Session; (2) the CBX VWAP Cross; and (3) the CBX MOC Cross. Additionally, where necessary, references to "CBX" will be changed to the "Main Session" and information may be rephrased or moved within each item to account for the additional crossing sessions. This Material Amendment also includes changes to CBX's hours of operation (See Part III Item 4) and order sizes (See Part III, Item 8). The addition of the Conditional Session and VWAP and MOC Crosses is primarily described in Part II, Item 1 and Part III, Items 4, 7, 9, 11, and 15. Conforming changes related to the operation of the four crossing sessions have been made to Part II, Items 1, 5, and 7 and Part III, Items 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, and 23. Each of the changes listed above apply to the Broker Dealer Operator and all Subscribers. LIVE false false