Cboe Options Exchanges
Cboe provides choice for our diverse trading customers by operating four U.S.-listed cash equity options markets, including the largest options exchange in the U.S. – Cboe Options Exchange*.
| Cboe Options Exchange |
|---|
| Hybrid, Classic Model |
| Open outcry and electronic exchange |
| Cboe C2 Options Exchange |
|---|
| Pro-Rata, Maker-Taker Model |
| All-electronic exchange |
| Cboe BZX Options Exchange |
|---|
| Price-Time, Maker-Taker Model |
| All-electronic exchange |
| Cboe EDGX Options Exchange |
|---|
| Classic Pro-Rata/Customer Priority/DMM Model |
| All-electronic exchange |
*Cboe Exchange, Inc. is the legal name of this exchange, which for marketing purposes is sometimes referred to as Cboe Options or Cboe Options Exchange.
Cboe Options Exchange Overview
Value of a Physical Trading Floor
Latest News
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July 8, 2025
Cboe Options Exchanges Add Nanosecond Transaction Time Resolution to Market Data and Order Entry Effective September 8, 2025, all Cboe-affiliated U.S. Options Exchanges will update the DateTime and Time Offset data types to provide nanosecond precision transaction time in the market data feeds listed below. -
July 8, 2025
Reminder - Cboe VPN Firewall Migration - Action Required Effective immediately, Cboe Network Engineering and Network Security are migrating all existing IPSec tunnels to new infrastructure service platforms. Please contact the Cboe NOC to schedule the migration of your current VPN tunnel if it is configured to connect to one of the following public IP addresses. -
July 8, 2025
Reminder - Cboe VPN Firewall Migration - Action Required Effective immediately, Cboe Network Engineering and Network Security are migrating all existing IPSec tunnels to new infrastructure service platforms. Please contact the Cboe NOC to schedule the migration of your current VPN tunnel if it is configured to connect to one of the following public IP addresses. -
July 7, 2025
Cboe Options Exchanges Restrictions on Transactions in Options on Vaxart, Inc. (Option Symbol VXRT) Effective July 07, 2025, Vaxart, Inc., VXRT will be delisted from the NASDAQ. Therefore, trading on Cboe Options (C1) Exchange in VXRT options commencing on July 08, 2025, will be subject to certain restrictions described below. Please click title for complete details. -
July 7, 2025
Change to Daily Closing Time for Options on a Certain Exchange Traded Product All Cboe-affiliated US Options Exchanges will change the daily closing time for options on a certain exchange-traded product (ETP) from 4:00 p.m. ET to 4:15 p.m. ET on the effective date listed below. This change applies to all existing options and related FLEX options for the ETP class identified below. Please click title for complete details. -
July 2, 2025
Morgan Stanley & Co., LLC EDGX Options DPM Appointment Termination Morgan Stanley & Co., LLC (“Morgan Stanley”) has terminated as a DPM on EDGX Options in all appointed classes. As a result of this DPM termination by the firm, the Exchange has re-allocated all Morgan Stanley DPM appointments to Citadel Securities LLC (Citadel) as of the close of business July 1, 2025 and effective for trade date July 2, 2025. -
July 2, 2025
Morgan Stanley & Co., LLC EDGX Options DPM Appointment Termination Morgan Stanley & Co., LLC (“Morgan Stanley”) has terminated as a DPM on EDGX Options in all appointed classes. As a result of this DPM termination by the firm, the Exchange has re-allocated all Morgan Stanley DPM appointments to Citadel Securities LLC (Citadel) as of the close of business July 1, 2025 and effective for trade date July 2, 2025. -
July 2, 2025
Cboe Options Exchange Introduces Complex Quoting on BOE Bulk Quoting Ports Effective trade date August 18, 2025, Cboe Options Exchange (C1) will introduce Complex Quoting on BOE Bulk Quoting ports for select Exchange Designated Complex Options, subject to regulatory review. -
July 2, 2025
Interim DPM Appointment of Citadel Securities LLC The Exchange has allocated on interim basis, pursuant to Exchange Rule 3.53(f), to Citadel Securities LLC (“Citadel”) the option classes to which Morgan Stanley & Co., LLC (“Morgan Stanley”) was the appointed the DPM as of July 1, 2025 (the “MS DPM classes”). -
July 2, 2025
Interim DPM Appointment of Citadel Securities LLC The Exchange has allocated on interim basis, pursuant to Exchange Rule 3.53(f), to Citadel Securities LLC (“Citadel”) the option classes to which Morgan Stanley & Co., LLC (“Morgan Stanley”) was the appointed the DPM as of July 1, 2025 (the “MS DPM classes”).