A Countervailing Member Trading Agreement (CMTA) is an agreement whereby an investor can enter into derivatives transactions with a limited number of different brokers, but can then consolidate those trades with a single clearing broker at the end of the trading day. www.nasdaq.com/investing/glossary/c/clearing-member-trade-agreement A countervailing member trading agreement is a document that establishes a working relationship between an investor and a brokerage firm. The agreement does not prevent the investor from using several brokerages for executive derivatives transactions. However, the document allows the investor to consolidate these transactions with a broker for the purpose of settlement of transactions. As part of a countervailing member trading agreement (CMTA), several brokers also enter into an agreement for only one of them to trade for a single client, whether or not the client enters derivatives transactions with all brokers. With this agreement, an individual investor may have commercial relationships with many brokers at once, but all the trades of different brokers are settled by a single brokerage company. www.interactivebrokers.com/en/…/clearing_member_trade_agreement.htm The terms of the typical clearing agreement allow an investor to explore investment options through a number of different brokers. The use of multiple brokers can occur due to several factors. A particular broker may have expertise with a particular sector of one market, while another broker may be considered more competent with options or shares related to another market. For an investor who wants to create a diversified equity portfolio, using the expertise of different brokers can be an effective strategy. For options transactions, CMTA must conduct transactions through the Options Clearing Company (OCC). The OCC supports the clearing process for different types of options traded on many exchanges. The Securities and Exchange Commission (SEC) regulates the OCC.
To comply with the terms of a clearing member agreement (CMTA), trades must be settled through the Option Clearing Corporation. The OCC is responsible for settling the clearing process for different types of option transactions on a number of exchanges. At the same time, the OCC also regulates the listing of new options in different markets. All CCO activities are carried out in accordance with the rules adopted by the Securities and Exchange Commission. On March 20, 2019, option Clearing Corporation (« OCC ») submitted to the Securities and Exchange Commission (« Commission ») the proposed amendment to SR-OCC-2019-003 (« Proposed Amendment ») pursuant to Section 19 (b) of the Securities Exchange Act of 19 34 (« Exchanges Act »)  and Rule 19b-4 , propose amendments to rule 401 of the CCO to require the inclusion of an « actionable identifier » (see below) in certain options for securities submitted to the CCO for processing.  The proposed amendment was published in the Federal Register on April 3, 2019 for public notice and the Commission did not receive notice of the proposed rule change. This mandate approves the proposed rule change. A countervailing member trading agreement (CMTA) refers to an agreement that allows an investor to enter into derivatives transactions with different brokers, but consolidates these transactions with a single brokerage company for clearing purposes. Use CMTA. A single trader can launch trades such as options, derivatives and futures with a limited number of brokerage firms, but only one company can manage trading. First, the CCO`s member transfer process (« CMTA ») allows a compensator member who completes a securities options contract (i.e. the performance countervailing member) to send the trade directly through oCC to another countervailing member for customs clearance and settlement (i.e., the carrying trimer member).
 As part of the CMTA process, a countervailing-exporting member may send options transactions directly to the omnibus accounts of one m