Key Takeaways
- Wednesday, not Friday: VIX options expire 30 days before the next month's SPX expiration.
- Settled to the SOQ: the payout uses a special opening VIX value, ticker VRO, not the prior close.
- Priced off futures: the matching VIX future, not spot VIX, anchors an option's value.
- No last-minute exit: expiring VIX options stop trading the business day before settlement.
- Cash, European style: no early exercise and no shares or futures change hands.
VIX options expiration works differently from almost every other listed option. Standard VIX options expire on a Wednesday, not a Friday, and they settle in cash to a special value calculated that morning from the opening prices of S&P 500 index options. That value, the Special Opening Quotation, is published under the ticker VRO, and it can differ noticeably from where the VIX closed the evening before.
The schedule and the settlement method together explain the thing that surprises most new VIX traders: a VIX option behaves like an option on a VIX future, not on the VIX number quoted on financial television. Once you see why, the pricing of VIX calls during a volatility spike stops looking broken.
What VIX Options Expiration Actually Is
The date rule: according to Cboe's VIX Weeklys fact sheet, a standard VIX futures contract settles on the Wednesday that is 30 days before the third Friday of the following calendar month. Cboe's VIX methodology states that VIX futures and options settle to the same morning value, so monthly VIX options expire on that same Wednesday. The 30-day gap is not arbitrary. The VIX measures expected volatility over the next 30 days, so on settlement morning Cboe needs a set of SPX options with exactly 30 days left to run.
For example, the third Friday of November 2026 is November 20. Counting back 30 days lands on Wednesday, October 21, 2026, which is the October VIX expiration. If either that Wednesday or the Friday 30 days later is an exchange holiday, the fact sheet says the expiration moves to the business day immediately before that Wednesday.
The underlying is an index, and an index cannot be delivered, so VIX options are cash-settled: the holder of an in-the-money option receives the difference between the settlement value and the strike, times the multiplier, in cash. Cboe's VIX options specifications list the contracts as European style, meaning they can only be exercised at expiration, with a $100 multiplier. If those terms are new, our guides to cash-settled options and the European style cover them in more depth.
The settlement value itself has a name and a ticker. It is the Special Opening Quotation, or SOQ, and it prints as VRO. VIX futures settle to the same SOQ on the same morning, which is the fact that ties the two markets together.
A VIX option is never really an option on the number you see on the screen. It is an option on a number that does not exist yet: the opening quote on settlement morning.
How the Settlement Value Is Calculated
One expiration, opening prices only. The Cboe VIX methodology sets out three ways the SOQ differs from the spot VIX calculated during the rest of the day:
- A single 30-day expiration. The SOQ uses SPX options from one expiration exactly 30 calendar days out. Spot VIX instead blends a near-term and a next-term expiration to synthesize a 30-day value.
- A Cboe-set strike range. Cboe announces the highest call strike and lowest put strike to include, and options inside that range are eligible even if their bid is zero. Spot VIX drops options once consecutive strikes show zero bids.
- Opening trade prices. The SOQ uses each option's opening trade price from a special opening auction held on settlement days. Spot VIX uses the midpoint of bid and ask. A midpoint is used for the SOQ only when a selected option has no opening trade.
Those differences are why the SOQ can land well away from Tuesday's closing VIX. Overnight news, the imbalance of orders in the opening auction, and the switch from two blended expirations to one all feed into a number that is not known until the opening auction finishes.
Work through what that means for a position. Suppose you bought one VIX call with a 20 strike for $1.50, which costs $1.50 × 100 = $150. On Tuesday the VIX closes at 22.40, and on Wednesday the SOQ prints at 21.10. Your call settles at 21.10 − 20 = 1.10 points, or 1.10 × 100 = $110, a loss of $40.
For example, had the option settled at Tuesday's close, it would have paid 22.40 − 20 = 2.40 points, or $240, a gain of $90. Same strike, a $130 difference that came entirely from the gap between Tuesday's closing VIX and Wednesday's SOQ. That is not a malfunction. It is the contract working exactly as specified.
The futures side runs on the same number with a bigger multiplier. Cboe's fact sheet lists VIX futures at $1,000 per point, so in the same example a trader long one future bought at 19.60 would settle at (21.10 − 19.60) × $1,000 = $1,500.
Why the option tracks the future. Because the VIX future and the VIX option expiring on the same Wednesday settle to the same SOQ, the futures price is the market's running, risk-adjusted estimate of where that SOQ will land. Spot VIX cannot be bought or sold directly; the fact sheet notes that "the VIX Index is not tradeable" while VIX futures are. So the option's value is anchored to the future, much as put-call parity ties a call and put to the forward price of their underlying.
Suppose spot VIX reads 24 while the VIX future expiring in 30 days trades at 21. A call with a 22 strike looks 2 points in the money against spot, which would be $200. Against the future it is 1 point out of the money, and the market prices it from the future: measured against the future, its whole premium behaves like extrinsic value, because if the SOQ eventually printed at 21 the call would expire worthless.
Spot VIX tells you what volatility is priced at today. The VIX future tells you the market's price today for the value the option will settle against.
How VIX Options Differ From Options on VIX Futures
Two products, two settlement mechanics. Cboe also lists a separate product, options on VIX futures, and the names are close enough to cause expensive confusion. According to Cboe's options on VIX futures fact sheet, they differ from standard VIX options on most of the terms that matter at expiration:
- What you receive. Standard VIX options settle in cash to the SOQ. Options on VIX futures are physically settled: an exercised contract becomes a position in a VIX future.
- The settlement value. Standard VIX options use the morning SOQ. Options on VIX futures use the daily settlement price of the underlying VIX future on the option's expiration date, which the fact sheet describes as P.M. settlement.
- The underlying. Standard VIX options reference the VIX Index through the SOQ. Options on VIX futures reference the front-month VIX future relative to their own expiration date.
- Where they trade. Standard VIX options trade on Cboe Options. Options on VIX futures trade on Cboe Futures Exchange.
In practice the distinction decides what lands in your account. A standard VIX call that finishes in the money pays cash and the position is gone. An option on a VIX future that finishes in the money leaves you holding a futures contract, with futures margin and the much larger futures multiplier, until you close it.
Why VIX Options Expiration Matters to Traders
It explains most of the "my VIX call didn't work" complaints. During a sharp selloff, spot VIX often jumps further than the near-dated future, because the future prices volatility at settlement and the market typically expects a spike to subside by then. Cboe's fact sheet shows futures becoming more sensitive to S&P 500 moves the closer they are to expiration. A call priced off that future gains far less than the headline VIX move suggests. Our VIX term structure piece covers how the gap between spot and futures behaves across the curve.
It also changes how you handle the last day. Because expiring VIX options stop trading the business day before settlement, an options holder has no chance to sell into Wednesday's open. A trader who holds a VIX option through Tuesday's close accepts whatever the SOQ prints, and that print can differ from Tuesday's closing VIX in either direction.
Finally, it matters for hedging. A VIX call bought as portfolio protection pays off against the future and the SOQ, not against the moment the market feels worst. Our comparison of VIX calls versus SPY puts walks through when that basis risk helps a hedge and when it hurts.
Edge Cases and Gotchas
The simple version of the rule breaks down in several specific places:
- Holiday weeks move the date. When the settlement Wednesday or the Friday 30 days later is an exchange holiday, expiration shifts to the business day before that Wednesday, so a Tuesday expiration is possible.
- Zero-bid options can count. Inside Cboe's announced strike range, options with a zero bid are eligible for the SOQ, which spot VIX would exclude. Far out-of-the-money opening trades can therefore nudge the settlement value.
- No opening trade, no problem. If a selected SPX option does not trade in the opening auction, Cboe uses the midpoint of its best bid and offer at the open instead.
- Weekly futures use different SPX inputs. Cboe notes that standard VIX futures settle from A.M.-settled SPX options while weekly VIX futures use P.M.-settled ones, so check the specification of the exact contract you hold; our explainer on A.M. versus P.M. settlement covers why that distinction exists.
- Early exercise is off the table. European style means a VIX call cannot be exercised during a spike. The only way to capture its value before expiration is to sell it, at whatever the market is paying relative to the future.
FAQ
These answers cover the questions traders usually ask the first time a VIX position settles somewhere they did not expect.
Why Did My VIX Call Barely Move When the VIX Jumped?
Because the option is priced off the VIX future that settles on the same date, not off spot VIX. VIX futures usually move less than spot during a spike, and the further a future is from expiration, the smaller its move tends to be. So a call can gain far less than the headline VIX move suggests.
Can I Exercise VIX Options Early?
No. Standard VIX options are European style, so they can only be exercised at expiration. To capture value before then, you sell the option rather than exercise it.
What Is the VRO?
VRO is Cboe's ticker for the Special Opening Quotation of the VIX on settlement morning. It is the exercise-settlement value for expiring VIX options, and the same SOQ is the final settlement value for VIX futures.
When Do VIX Options Stop Trading?
Expiring VIX options stop trading at the end of the session (4:00 p.m. Central) on the business day before the expiration date, which is usually a Tuesday. They do not trade on settlement morning, so a position is fixed from Tuesday's close until the SOQ is published.
Do VIX Weekly Options Settle the Same Way?
Broadly, yes. VIX Weeklys (ticker VIXW) expire on Wednesdays, settle in cash to a Special Opening Quotation, and generally share the monthly contracts' specifications.
One difference Cboe documents is on the futures side: weekly VIX futures settle from P.M.-settled SPX options while standard VIX futures use A.M.-settled ones.
