69.63 Million Matched Options Contracts on 30 July: Market Share, Quotes and Execution Quality

69.63 Million Matched Options Contracts on 30 July: Market Share, Quotes and Execution Quality

The largest U.S. options exchange group handled fewer than three of every ten matched contracts on Thursday, 30 July 2026. Cboe's four options exchanges recorded 20,521,985 contracts, or 29.47% of the 69,628,810 industry total. Nasdaq's six exchanges followed at 26.59%.

NYSE accounted for 18.46%, MIAX for 16.81%, BOX for 5.22% and Members Exchange for 3.44%. No operator group reached 30%.

That fragmentation is a current market fact. It says where contracts traded across the full session. It does not identify the best displayed price for one strike and expiration, the fill a broker obtained, or the exchange that supplied price improvement.

Market share answers an activity question. Execution quality requires contract, quote, order and fill evidence.

Six groups contain 18 exchanges

Cboe's U.S. Options Market Volume Summary groups exchanges by operator. The Options Price Reporting Authority lists the individual participant exchanges inside those groups.

The six volume figures sum exactly to the published industry total. Options Matrix Pro also divided each count by 69,628,810 and reproduced Cboe's displayed shares after rounding.

The two largest operator groups handled a calculated 56.06% of matched contracts. The four largest handled 91.34%. These operator-group calculations cannot measure venue-level concentration. Cboe combines four exchanges in one row and Nasdaq combines six, so a group share cannot be assigned to any one member exchange.

The grouping also prevents a clean conclusion about retail flow. The totals combine many products, strikes, expirations, order sizes, participant types and execution mechanisms. A market-wide percentage describes the day's completed activity without showing which venue was competitive for a particular contract at a particular second.

An airline count cannot price one route

Imagine counting every passenger carried by six airline groups in one day. The busiest group may carry the most people nationwide. That total cannot tell a traveller which airline has the lowest fare, an available seat and the right departure time for one route.

Options market share works the same way. The industry total is the passenger count. A particular option series is the route. Its current bid, offer and displayed size are the fare board.

A high-volume operator can lack the best quote in the series being examined. A smaller operator can display the national best price for that series because the daily total aggregates the entire listed market while the quote belongs to one contract and one moment.

OPRA connects the fragmented quote book

OPRA says every options trade and every exchange quote change is reported to its system. Its processor gathers the participant exchanges' last-sale and quote information, consolidates it and disseminates it to vendors.

That consolidated feed allows the market to identify the best displayed bid and offer across exchanges for an eligible option series. The SEC-approved Options Order Protection and Locked/Crossed Market Plan defines the best bid as the highest bid and the best offer as the lowest offer. It requires participant exchanges to maintain policies and procedures designed to prevent trade-throughs, subject to the plan's exceptions.

The framework leaves material venue differences in displayed size, response speed, queue position, auction results, fees, customer priority and fill probability. The contract-level consolidated quote answers an immediate price question more directly than the previous day's market-wide share.

The quote remains time-sensitive. The Options Industry Council notes that displayed bid and ask size can vary by contract and that a larger order can consume the best price before moving to the next level. A midpoint is a reference; actual execution can differ.

Model output: a smaller group can have the better offer

Consider a hypothetical option series quoted on two exchanges. The operator shares borrow the rounded 30 July Cboe and BOX group percentages, but every quote and size below is invented.

The national best displayed market is $2.05 bid and $2.15 offered. Venue B supplies both prices despite its operator's smaller market-wide share.

If the displayed offers remain available, ten standard contracts cost $2,150 at Venue B:

10 contracts x $2.15 x 100 = $2,150

The same quantity at Venue A's displayed offer costs $2,200. The hypothetical difference is $50 before fees:

10 x ($2.20 - $2.15) x 100 = $50

This model uses invented quotes. It assumes both quotes are firm, accessible and unchanged long enough to execute. It omits routing latency, auctions, hidden or reserve liquidity, fees, rebates, partial fills and price improvement.

The example isolates one point: a market-wide rank cannot choose the best price for one series.

Execution quality uses more than the displayed offer

FINRA Rule 5310 requires member firms to use reasonable diligence to find the best market under prevailing conditions. The rule names the market's price, volatility and relative liquidity, the transaction's size and type, the number of markets checked, quote accessibility and the customer's order terms.

FINRA's regular-and-rigorous review standard adds further evidence. Firms compare price improvement and disimprovement, fill probability, speed, execution size, transaction costs, customer needs and payment-for-order-flow or internalisation arrangements.

The national best displayed offer is one input to execution quality. A quote may cover only part of an order. An auction can improve the price. A limit order may wait in a queue. A complex order can trade through a strategy book rather than as independent legs. Fast markets can change before a routing decision reaches an exchange.

The final fill therefore needs its own record: order receipt time, order type, limit price, routed venue, prevailing consolidated quote, execution price, quantity, fees and any price improvement. Daily operator share supplies none of those fields.

What the 30 July table can support

The Cboe summary supports three narrow observations.

1. The market was fragmented. Six operator groups and 18 OPRA participant exchanges shared the listed-options market.
2. No operator group dominated the session. The largest displayed share was 29.47%.
3. Activity was concentrated among larger families. The top four operator groups handled a calculated 91.34% of matched volume, although those groups contain 16 separate exchanges.

The table cannot rank execution quality, identify the national best quote for a series, separate retail from institutional flow, measure price improvement or explain why an order reached one venue.

It also cannot establish market direction. Every matched contract has a buyer and a seller, and the operator split contains no portfolio or opening-and-closing context.

A four-check routing review

1. Name the series. Record the underlying, expiration, strike and call or put before looking at market quality.
2. Capture the consolidated quote. Save the bid, offer, displayed size and timestamp at order receipt.
3. Record the order and fill. Keep the order type, limit, routed venue, execution price, quantity, fees and partial fills together.
4. Compare execution evidence. Measure price improvement or disimprovement, speed and completion against the quote that existed when the order arrived.

OMP's options-chain guide places the series and quote fields in context. The liquidity guide explains spread, size and midpoint limits. The contract-comparison framework keeps execution beside payoff, capital and risk.

Sources, limitations and risk

The 30 July volumes and displayed shares came from Cboe's U.S. Options Current Market Statistics page. Cboe labelled the industry summary Data as of 16:40 30/07/2026, and the page states that all times are Central. The page identified the completed session as Thursday, 30 July 2026.

The current exchange count and consolidated-data description came from the OPRA participant and data FAQ. The order-protection framework came from the SEC's Options Order Protection Plan record and plan text. Broker execution factors came from FINRA Rule 5310 and its options-market guidance. Quote and size mechanics came from the Options Industry Council's trade-entry and execution guide.

Options Matrix Pro calculated the unrounded shares, top-two and top-four totals and hypothetical quote costs. Market-share and quote pages are dynamic. Publication after 31 July requires a fresh check while preserving the dated 30 July evidence.

Displayed quotes can change, liquidity can deteriorate and an order may receive a partial or delayed fill. Spreads, fees, commissions, taxes, assignment and exercise can alter the result. Options can lose substantial value and short positions can create losses greater than premium received.

Options Matrix Pro publishes this article and has a commercial interest in its research platform. The internal links are first-party educational pages. This material is general education, not personal financial advice or a recommendation to buy, sell or hold any security or option. Options involve substantial risk and are not suitable for every investor.

The decision rule

Use market share to describe where the market traded. Use the consolidated quote to judge the displayed price for one series, then use the order-and-fill record to judge execution. If the evidence stops at an operator's daily percentage, stop at activity.