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Cboe U.S. Equities
Cboe is currently one of the largest U.S. equities market operators on any given day. We operate four U.S. equities exchanges – the BZX Exchange, BYX Exchange, EDGA Exchange, and EDGX Exchange. Cboe Global Markets (formerly CBOE Holdings, Inc.) acquired Bats Global Markets, the prior operator of these exchanges, in February 2017. To learn more about that transaction, click here.
North American Equities Insights
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Summary of market volume and market share by venue for the Cboe U.S. equities exchanges.
Book Viewer
| Orders Accepted | Total Volume | Expand All | Select MIC to filter: | |
|---|---|---|---|
| Top of Book | Last 10 Trades | ||||||
|---|---|---|---|---|---|---|---|
| Shares | Price | Time | Price | Shares | |||
| Asks | |||||||
| Bids | |||||||
Last updated
Most Active
The current, most actively traded securities on the Cboe Exchanges.
Latest News
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October 6, 2025
Cboe Equities Contingent Closing Auction Joint Test In coordination with other equities exchange operators, Cboe BZX Equities Exchange (BZX) will test contingent closing auction procedures on Saturday, November 15, 2025, and Saturday, December 13, 2025. -
October 6, 2025
Cboe Equities Cboe One Feed, Testing Opportunity Support for SIP Fractional Share Reporting Enhancements Effective February 23, 2026, FINRA will implement enhancements to its equity trade reporting facilities to support reporting of fractional share quantities. These enhancements are being made in coordination with the Unlisted Trading Privileges (UTP) and Consolidated Tape Association (CTA) Securities Information Processors (SIPs) to facilitate dissemination of fractional share quantities for National Market System (NMS) securities. Beginning November 2025, the SIPs will open industry testing for fractional share trade reporting and dissemination. -
October 3, 2025
Cboe Traders Weekly for Friday, October 3, 2025 -
October 3, 2025
Upcoming Changes to Equity Round Lot Sizes – November 3, 2025 As part of Securities and Exchange Commission (SEC) amendments to Regulation National Market System (Reg NMS), new round lot definitions will go into effect on Monday, November 3, 2025, to enhance transparency of quotes and orders in NMS stocks. -
October 3, 2025
Reminder - Cboe Equities Weekend and Certification Testing Support for Round Lot Requirement Changes As previously announced, the Securities and Exchange Commission (SEC) will introduce new Round Lot Tier designations beginning November 3, 2025. To support these changes, all Cboe-affiliated U.S. Equities Exchanges will offer weekend testing opportunities beginning September 20, 2025. -
September 30, 2025
Update - Cboe Global Cloud to Upgrade to Kafka Version 3.9.1 Beginning November 1, 2025, through November 30, 2025, Cboe Global Cloud will update to Apache Kafka version 3.9.1. In preparation for this upgrade, several testing opportunities will be provided beginning September 1, 2025, as further detailed below. -
September 26, 2025
Cboe Traders Weekly for Friday, September 26, 2025 -
September 22, 2025
Reminder: 2025 SIFMA/FIA and Reg SCI BCP/DR Test In coordination with other market centers, as part of the annual SIFMA/FIA industry test and in support of Regulation Systems Compliance and Integrity (SCI) and Cboe Futures Exchange, LLC (CFE) requirements, Cboe is scheduled to host its annual business continuity plan/disaster recovery (BCP/DR) test on Saturday, October 25, 2025. -
September 22, 2025
Cboe BZX Equities Updates Limit Order Behavior for Closing Auctions Effective November 7, 2025, Cboe BZX Equities Exchange (BZX) will update Limit-On-Close (LOC) and Late-Limit-on-Close (LLOC) order behavior as detailed below. These changes are being made to improve Closing Auction stability and enhance price discovery. -
September 19, 2025
Cboe Traders Weekly for Friday, September 19, 2025