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.
Summary of market volume and market share on the Cboe U.S. options exchanges.
| Data for Aug 23 | Volume | % Market | ||||||
|---|---|---|---|---|---|---|---|---|
| Cboe Options Exchange | 49,500,806 | 79.45% | ||||||
| Cboe C2 Options Exchange | 0 | 0.00% | ||||||
| Cboe EDGX Options Exchange | 548,965 | 0.88% | ||||||
| Cboe BZX Options Exchange | 421,470 | 0.68% | ||||||
| Matched volume doesn't include trades routed to other market centers. (Data delayed at least 20 min.) | ||||||||
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Cboe Options Exchange Overview
Value of a Physical Trading Floor
Latest News
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August 22, 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 an 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. -
August 22, 2025
Cboe Traders Weekly for Friday, August 22, 2025 -
August 22, 2025
Cboe EDGX Options Exchange Inside Switch Upgrade Effective August 25, 2025, Cboe EDGX Options Exchange (EDGX) will perform a migration of inside network switches that are nearing end-of-life to a newer model. -
August 18, 2025
Cboe Options Exchanges Restrictions on Transactions in Options on TPI Composites, Inc. (Option Symbol TPIC) Effective August 18, 2025, TPI Composites, Inc., TPIC will be delisted from the NASDAQ. Therefore, trading on Cboe Options (C1) Exchange in TPIC options commencing on August 19, 2025, will be subject to certain restrictions described below. Please click title for complete details. -
August 18, 2025
Reminder - Cboe Options to List P.M-Settled S&P 500 Equal Weight Index Options Effective trade date August 25, 2025, Cboe Options Exchange (C1) will begin listing P.M.-settled, cash-settled options on the S&P 500 Equal Weight Index. -
August 18, 2025
Cboe Options Exchange Permits FLEX Options on IBIT, GBTC, BTC, and BITB Effective Monday, August 18, 2025, Cboe Options Exchange (C1) will permit FLEX trading on the following Bitcoin-related products. -
August 15, 2025
Cboe Traders Weekly for Friday, August 15, 2025 -
August 15, 2025
Cboe Equities and Options Exchanges Will Perform NY4, NY5, and NY6 1G Switch Replacements Effective per the schedule below, all Cboe-affiliated U.S. Equities Exchanges and BZX Options (BZX), C2 Options (C2), and EDGX Options (EDGX) Exchanges will perform switch hardware upgrades in their certification and production environments. In preparation for this switch migration, Cboe NOC will not accept new cross connects or interface configuration changes in the certification or production environments for these exchanges during the week before each group of switch replacements. -
August 15, 2025
Cboe Holiday Reminder – Modified Trading Hours on Monday, September 1, 2025 The table below outlines the modified trading schedules for the Cboe Options Exchanges (Cboe Options (C1), C2, BZX, and EDGX Options) and the Cboe U.S. Equities Exchanges (BYX, BZX, EDGA, and EDGX Equities) in observance of Labor Day. -
August 14, 2025
Cboe Introduces New Timestamping Report Effective August 25, 2025, all Cboe-affiliated U.S. Equities and Options Exchanges will introduce a new All Cancels Timestamping Report, subject to regulatory review.