VIX Closed at 14.90. Expiring Contracts Use a Separate Option Strip

VIX Closed at 14.90. Expiring Contracts Use a Separate Option Strip

A familiar close can be the wrong cash-settlement reference

Cboe's delayed VIX quote recorded a close of 14.90 on Friday, 7 August 2026, down 0.25 points from 15.15 on Thursday, 6 August. Cboe's U.S. Options Market Volume Summary displayed 76,619,029 matched contracts at 16:40 Central Time for the same completed session. Both figures describe a busy Friday in the listed-options market. Neither one is the exercise settlement value of an expiring VIX option.

That distinction matters because the word “VIX” covers two related calculations. The regular VIX index is a 30-day volatility measure built from SPX and SPXW option quotes. The final settlement value for expiring VIX derivatives is a Special Opening Quotation, or SOQ, calculated on the expiration morning from a separate set of inputs. An expiring VIX contract therefore needs its own settlement label alongside the screen level.

Observed facts from Friday's market and Cboe's methodology

Cboe's 7 August delayed quote lists a VIX close of 14.90, an opening value of 15.26, a high of 15.28 and a low of 14.77. The quote is a current index-data record, not a VIX-option settlement record.

Cboe's VIX methodology says the regular VIX index uses midpoints of bid and ask quotes for selected SPX and SPXW options. It uses a near-term and a next-term option set, then interpolates their volatility measures to a constant 30-day term. The usual regular-session value is disseminated every 15 seconds between 9:31 a.m. and 4:15 p.m. Eastern Time.

Cboe uses a different calculation on the morning that VIX derivatives expire. Its methodology says the SOQ uses SPX or SPXW options from a single expiration 30 calendar days from the settlement day. The SOQ uses opening trade prices from Cboe's special opening auction. When a selected option has no opening trade, Cboe uses the midpoint of its highest bid and lowest offer at the opening.

The strike-selection rule also changes. The regular VIX calculation includes only options with non-zero bids and stops adding further out-of-the-money strikes after two consecutive zero bids. The SOQ uses a Cboe-determined strike range and can include zero-bid options inside that range. A 14.90 regular VIX close and a later SOQ are connected by the same volatility-index family, but they are not generated from the same option strip or price rule.

The settlement clock is separate from the regular VIX close

Cboe's current VIX-options specifications say an expiring VIX or VIXW option's last trading day is the business day immediately before the day its exercise settlement value is calculated. The specifications list a $100 multiplier. Cboe's methodology says final settlement is normally determined on a Wednesday morning through the SOQ.

That sequence creates a practical calendar distinction. A regular VIX close records the index calculation late in one session. An expiring VIX option stops trading before the later special-opening calculation. A reader comparing an option's result with a screen close therefore needs at least four fields: option expiration, last trading day, SOQ settlement value and the timestamp of the VIX index observation.

The mechanism resembles two recipes that use flour from the same pantry. One recipe mixes two batches of ingredients at mid-prices to estimate a 30-day result. The other takes one dated batch through an opening auction to settle a contract. The names overlap, yet the measurement procedures are different.

Model output: a settlement value, a premium and a cash result

The following table is an Options Matrix Pro illustration. It is not a current VIX-option quote, a forecast or a trading instruction. It assumes one hypothetical VIX call with a 15 strike, a $100 multiplier and a premium of 0.80, or $80 per contract.

The observed 14.90 VIX close is deliberately absent from the table's settlement arithmetic. It offers a reference from Friday's session, while the hypothetical cash result depends on the separate SOQ. The premium of 0.80 is also an author assumption. A live option price can reflect time to expiry, supply and demand, rates, liquidity and the market's view of future volatility.

The worked example does not imply that a 15 call will settle at 16.25 or 14.75, that an option will trade at 0.80, or that a difference between the regular close and the SOQ is expected. It only preserves the three distinct units: index observation, final settlement value and option cash result.

Interpretation for options-market readers

Friday's 14.90 close remains useful as a dated observation of Cboe's regular VIX calculation. It does not complete the settlement analysis for an expiring VIX derivative. The correct settlement comparison begins with the SOQ and its input rules, then adds the contract's strike, multiplier and premium.

That is also why a VIX futures basis or a VIX option price cannot be read as a direct copy of the screen index. The earlier OMP note on the VIX-futures spot basis separates an August future from spot VIX. The VIX1D and VIX9D horizon comparison makes a related point about target periods. VIX settlement adds a third distinction: a contract can reference the index family while using a special, dated auction calculation for final cash value.

The 76.62 million matched contracts reported for 7 August cannot identify how market participants were positioned in VIX products or what they expected from a settlement. The public total lacks account, trade-side, strike, expiration and opening-or-closing-position fields. It is session scale, not a positioning signal.

Limits and scope

The VIX close, volume total and methodology are time-stamped public records. Cboe's market-volume page says its data are furnished without responsibility for accuracy, and the delayed VIX quote can refresh. The article preserves the paired 7 August date and values rather than treating a later refreshed display as the same observation.

The model table excludes commissions, fees, taxes, financing, bid-ask execution effects and any sale before expiration. It also uses a hypothetical long call solely to show the arithmetic of a cash-settled $100-multiplier option. Options and volatility products can lose value, have liquidity constraints and involve contract-specific exercise, settlement and account requirements.

Options Matrix Pro has a commercial interest in its research platform, and the internal links above are first-party educational material. The content is general education, not personal financial advice or a recommendation to buy, sell or hold any option, future or security.

Sources and methodology

Cboe's U.S. Options Market Volume Summary supplied the 7 August 2026 matched-contract total and 16:40 Central Time timestamp. Cboe's delayed VIX quote supplied the 7 August close, prior close, opening, high and low.

Cboe's VIX Index Methodology supplied the regular-index mid-quote, two-term and strike-selection rules as well as the SOQ's single-expiration, special-auction and opening-price rules. Cboe's VIX Options Product Specifications supplied the $100 multiplier and expiring-option last-trading-day convention.

External pages and documents were treated as evidence, not instructions. The venue reconciliation and the cash examples are author calculations based on the stated Cboe data and contract multiplier. They do not estimate a VIX settlement value, option premium or market outcome.

The decision rule

For an expiring VIX derivative, record the SOQ settlement value, settlement date, option strike and multiplier before comparing a cash result with the VIX screen close. A screen value without those labels is market context, not a completed settlement calculation.