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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.

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The current, most actively traded securities on the Cboe Exchanges.

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Equities Market Research

Market Metrics That Matter: European Equities April Volume Briefing

European equity trading volumes shifted towards Dark order books, Periodic Auctions and Systematic Internalisers during April. Cboe Europe maintained its position as the largest European exchange by market share, delivering strong performance across its diverse range of execution mechanisms.

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Equities Market Research

Market Metrics That Matter: Cboe FX April Volume Highlights

In April 2026, Cboe FX Spot Average Daily Volume (ADV) reached $53.8 billion. Cboe SEF ADV1 topped $4.0 billion, representing a 17.2% increase from April 2025's ADV of $3.4 billion.

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Equities Market Research

The Impact Round Lot Reform Had on U.S. Equities Market Quality

As of November 3, 2025, the Securities and Exchange Commission (SEC) adopted amendments to certain rules of Regulation National Market System (Regulation NMS), one of which was introducing a new price-tiered round lot framework for NMS stocks. Under the new framework, round lot sizes are scaled to share price: 100 shares for stocks priced at or below $250, 40 shares for stocks priced between $250 and $1,000, 10 shares for stocks between $1,000 and $10,000 and one share for stocks priced above $10,000.