Cboe BZX: Maker-Taker Equities Exchange

Key Takeaways

• Cboe BZX is a price-time priority equities exchange using a maker-taker fee model.
• It pays a rebate for adding liquidity and charges a fee for removing it.
• No single U.S. equities exchange holds more than roughly 13 percent of volume.
• The maker rebate attracts resting liquidity, which routers value when seeking passive fills.

What It Is

Cboe BZX is a registered national securities exchange for U.S. stocks. It began life as a BATS market, and it joined Cboe when the company acquired Bats Global Markets in 2017. Today it sits alongside three sister venues: BYX, EDGX, and EDGA.

BZX matches orders on price-time priority. The best-priced order trades first, and among orders at the same price, the one entered earliest goes first. This is the standard model most equity traders picture when they think of a continuous limit order book.

The Intuition

The U.S. stock market is fragmented across many exchanges and off-exchange venues, and no single one dominates. Each exchange competes for order flow, and one of its main tools is the fee model.

BZX uses maker-taker pricing. A trader who posts a resting limit order is a "maker" who adds liquidity, and BZX pays that trader a rebate when the order fills. A trader who sends an order that immediately executes against the book is a "taker" who removes liquidity, and BZX charges a fee. The rebate is meant to draw resting orders, which deepens the book and tightens spreads, making the venue more attractive to everyone.

How Cboe BZX Works

When you send a limit order priced away from the market, it rests on the BZX book and waits. If it fills, you earn the add rebate. When you send a marketable order, it sweeps the resting book, you pay the remove fee, and the maker on the other side collects the rebate.

A simplified version of the standard schedule looks like this:

Add liquidity (maker):    rebate of about 0.0016 per share
Remove liquidity (taker): fee of about 0.0030 per share

The fee gap funds the rebate plus the exchange's margin. BZX layers volume tiers on top, so high-volume members can earn larger rebates by meeting daily share thresholds. Because all U.S. exchanges must honor the national best bid and offer, BZX competes on rebates, speed, and order types rather than on showing a better price than rivals.

Worked Example

Suppose a stock is quoted 25.00 bid, 25.02 offer. You post a buy limit at 25.00 for 1,000 shares. It rests on the BZX book as a maker order.

A seller then sends a marketable order that hits your bid. Your 1,000 shares fill at 25.00. At an add rebate near 0.0016 per share, you earn about 1.60 in rebate on that fill. The seller, as the taker, pays roughly 0.0030 per share, or about 3.00.

Now flip it. If you had instead crossed the spread and bought at 25.02 immediately, you would have paid the taker fee rather than earned the rebate. The same trade, routed differently, carries a different cost.

Common Mistakes

1. Thinking BZX offers different prices than other exchanges. Every exchange must respect the national best bid and offer. BZX competes on rebates, latency, and order types, not on a better quote.

2. Ignoring the maker-taker incentive when routing. A broker chasing rebates may post on BZX even when a faster fill is available elsewhere. The rebate is real, but so is the risk the order never fills.

3. Confusing BZX with BYX. They share a parent but use opposite fee models. BZX is maker-taker; BYX is inverted, charging makers and paying takers.

4. Assuming high market share. No single U.S. equities exchange exceeds roughly 13 percent of volume. BZX is one of many competing venues, not a dominant one.

5. Overlooking volume tiers. The headline rebate is a base rate. Large members hit volume tiers that change the economics, which is why two firms can experience very different costs on the same venue.

Frequently Asked Questions

What is Cboe BZX in simple terms? Cboe BZX is a U.S. stock exchange that uses a maker-taker fee model, paying a rebate to traders who post resting orders and charging a fee to traders who take them. It matches orders on price-time priority.

How does Cboe BZX affect investment decisions? For most individual investors the venue is invisible because a broker routes the order, but the maker rebate influences where passive orders rest. Active traders who post liquidity may earn rebates on BZX rather than paying a taker fee.

What is a real-world example of Cboe BZX in action? A market maker posts thousands of resting quotes on BZX to earn the add rebate. When those quotes fill, the rebate is part of the firm's edge, which is why exchanges compete hard on maker incentives.

How can investors use Cboe BZX effectively? If your broker offers routing choices, posting a limit order that adds liquidity on a maker-taker venue like BZX can earn a rebate instead of paying a fee, though it trades the certainty of an immediate fill for that benefit.

How is Cboe BZX different from Cboe BYX? BZX is maker-taker: it pays makers and charges takers. BYX is inverted, also called taker-maker: it charges makers and pays takers, which appeals to traders who prioritize fast fills.

Sources

1. Cboe. "BZX U.S. Equities Exchange Fee Schedule." https://www.cboe.com/us/equities/membership/fee_schedule/bzx/
2. Cboe. "U.S. Equities Exchanges Overview." https://www.cboe.com/us/equities/
3. Cboe Insights. "The Value of Inverted Exchanges." https://www.cboe.com/insights/posts/the-value-of-inverted-exchanges/
4. Federal Register. "Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend its Fee Schedule." https://www.federalregister.gov/documents/2026/04/15/2026-07261/self-regulatory-organizations-cboe-bzx-exchange-inc-notice-of-filing-and-immediate-effectiveness-of

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.