Mechanics · SPX 0DTE · verified 2026-09-25
What happens if my SPX 0DTE expires in the money? (2026)
No shares change hands: an SPXW contract in the money at the 4:00pm ET close is cash-settled to the official S&P 500 closing value — intrinsic value × 100 per contract is credited (long) or debited (short) the next business day. Out of the money by any amount, it expires worthless. Trading in the expiring contract stops at 4:00pm ET.
Instrument facts last verified 2026-09-25 · broker rows last verified 2026-09-25
Written and verified by the 0dteclose desk · methodology · corrections: corrections@0dteclose.com
Run it on your own position
See what 4:00 does to your SPX strike
Prefilled with a 7700 call bought at 2.40 — enter your own strike and price; the readout uses the 15-min delayed CBOE quote.
| Fact | Value | Source |
|---|---|---|
| Settlement | Cash, to the official S&P 500 closing value on expiration day (PM-settled SPXW) | www.cboe.com verified 2026-09-25 |
| Exercise style | European — exercisable only at expiration; no early assignment | www.cboe.com verified 2026-09-25 |
| Multiplier | 100 (intrinsic value × 100 per contract) | www.cboe.com verified 2026-09-25 |
| Last trade, expiring contract (ET) | 4:00pm ET (1:00pm ET on early-close sessions) | www.cboe.com verified 2026-09-25 |
| Auto-exercise threshold | Not applicable in the share sense — any in-the-money amount is settled in cash, no shares | www.cboe.com verified 2026-09-25 |
| OCC exercise-instruction cutoff | Not applicable — no exercise decision; the 4:00pm ET closing value is final | www.optionseducation.org verified 2026-09-25 |
| Exercise / settlement reference time | 4:00pm ET official closing value; OCC closing marks use the 4:00pm ET NBBO | www.cboe.com verified 2026-09-25 |
| Cash settlement posts | Next business day (T+1) | www.optionseducation.org verified 2026-09-25 |
What time does trading in the expiring SPXW contract stop?
Cboe's SPX/SPXW specification says trading in SPXW options will ordinarily cease on the day of expiration at 4:00pm ET, so an expiring SPX 0DTE contract stops trading at 4:00pm ET — the same minute its settlement value is fixed. Cboe's extended-hours FAQ puts it the same way: expiring SPXW PM-settled index options stop trading at 4:00pm ET because they are European-style and cash-settled. That is 15 minutes earlier than expiring SPY and QQQ options, which trade until 4:15pm ET. There is no after-hours window in which a late move can change an SPXW result, and no exercise decision to send in after the bell. On early-close sessions, such as the day after Thanksgiving, both the session and the settlement move to 1:00pm ET, and the countdown on the SPX simulator follows the NYSE calendar. Standard third-Friday SPX monthlies are a different product: they are AM-settled to an opening value, and nothing on this page applies to them.
How is the settlement value determined?
A PM-settled SPXW contract settles to the official S&P 500 closing value on expiration day. That value is computed from the closing prices of the 500 component stocks, not from the last index print on a chart, so it can differ from the last-traded value by a few cents — our session archive records the close for every session with the source field named. Intrinsic value is plain arithmetic: for a call, settlement value minus strike; for a put, strike minus settlement value; zero if the result is negative. Multiply by the 100 multiplier for dollars per contract. Worked example: a 7700 call with the index closing at 7712.35 has an intrinsic value of 12.35, which is $1,235 per contract. If the index closes at 7699.99, the same call is out of the money by one cent and settles at $0 — there is no partial credit and no threshold to clear beyond the strike itself.
What exactly hits my account, and when?
Cash, and only cash. If you are long an SPXW contract that finishes in the money, your account is credited intrinsic value × 100 per contract, and the cash settles the next business day; many brokers show the pending amount the same evening. No shares are delivered, there is nothing to exercise by hand, and there is no buying-power check for taking delivery, because there is nothing to deliver. Your result is the credit minus what you paid: a 7700 call bought at 2.40 ($240 per contract) that settles 12.35 in the money is credited $1,235, a difference of $995 before commissions and fees. If the contract finishes out of the money by any amount it expires worthless, and the $240 premium is the whole loss. The same arithmetic runs in the SPX simulator at seven close scenarios, using the 15-min delayed CBOE quote as the starting point.
What if I'm short the contract?
A short SPXW contract that finishes in the money is debited the same intrinsic value × 100 per contract the long side is credited, again in cash on the next business day. Sold the 7700 call at 2.40 and the index closes at 7712.35? The debit is $1,235 against $240 received, a net $995 per contract before fees. You are never handed shares and never assigned early: SPXW options are European-style, so exercise happens only at expiration and only as a cash debit. Out of the money at the close by any amount, the contract expires and the premium received stays in the account. Until settlement posts, the broker keeps the margin requirement on the position. The one thing that cannot happen after 4:00pm ET is closing it — trading in the expiring contract has stopped. The full short-side walk-through is on can you get assigned on SPX 0DTE?
Does my broker do anything on its own?
With SPXW there is nothing to deliver, so the broker policies that exist to stop an account from receiving shares it cannot pay for rarely come into play. What a broker can still do is close a position before 4:00pm ET when the account would breach its margin requirement at settlement — the table below records each broker's published policy, and tastytrade and Interactive Brokers both describe risk-team or simulation-based closing on expiration day. The exercise cutoffs brokers publish (Robinhood 5:00pm ET, Charles Schwab (thinkorswim) not confirmed from an official page, tastytrade 4:30pm ET, Interactive Brokers 5:25pm ET, Webull 4:00pm ET) govern instructions on physically settled options such as SPY; for SPXW the 4:00pm ET closing value decides everything and no instruction changes it. Rows we could not confirm on an official page carry an unverified badge; the per-broker tracker has the full record for each broker, dated.
How is this different from SPY/QQQ?
Four differences, all mechanical. First, settlement: SPX pays cash; SPY and QQQ deliver 100 shares per contract at the strike. Second, style: SPXW is European, so it cannot be exercised or assigned before expiration; SPY and QQQ options are American and can be assigned on any business day. Third, time: an expiring SPXW contract stops trading at 4:00pm ET, while SPY and QQQ options trade until 4:15pm ET and holders can send exercise instructions until their broker's cutoff (OCC's own is 5:30pm ET). Fourth, the threshold: SPY and QQQ contracts in the money by $0.01 or more at the 4:00pm ET close are exercised automatically, turning a long 650 SPY call into a $65,000 share purchase. Tax treatment differs too — SPX options are Section 1256 contracts; the §1256 calculator shows the 60/40 arithmetic next to SPY's short-term treatment.
What about a spread?
Each leg settles on its own, in cash, and the amounts net in your account. Take a 7700/7710 call spread, long the 7700 and short the 7710. If the index closes at 7725.00, both legs are in the money: the long leg is credited 25.00 × 100 = $2,500 and the short leg is debited 15.00 × 100 = $1,500, a net $1,000 — the spread's full width × 100, which is its maximum value. If the index closes at 7704.00, only the long leg is in the money: $400 credited, the short leg expires worthless. If it closes below 7700, both legs expire worthless. Because nothing is delivered, SPXW spreads carry no pin risk in the share sense: a close between the strikes cannot leave you holding stock over the weekend. The 4:00pm ET closing value decides both legs at once, and nothing after that changes them.
Broker by broker
| Broker | Exercise / do-not-exercise cutoff (ET) | Unaffordable ITM position at expiration | Cash-account settlement | Source |
|---|---|---|---|---|
| Robinhood | 17:00 ET (best-efforts; app/web exercise requests close 4:00pm ET) | May attempt to sell the option in the market within the last 30 minutes before close on expiration day if the account lacks buying power/shares to exercise; if unsellable, may submit a Do-Not-Exercise request to the OCC so the contract expires worthless. | T+1 | robinhood.com verified 2026-09-25 |
| Charles Schwab (thinkorswim) unverified | unverified | Per Schwab's expiration guide: if a long option is ITM at expiration and the account cannot support the resulting position, the brokerage may at its discretion issue a do-not-exercise instruction on the client's behalf, or close out (sell) the position without notifying the client. Schwab's own exercise-instruction cutoff time is not stated on the page (OCC's is 4:30pm CT). | T+1 | www.schwab.com verified 2026-09-25 |
| tastytrade | 16:30 ET (3:30pm CT) for exercise / do-not-exercise requests via the Trade Desk; best-efforts until 17:30 ET (4:30pm CT) | Risk team may close an option position before the market close on expiration day if the account is subject to expiration risk (an exercise/assignment that would create a large unhedged position). Sell-to-open orders on expiring equity/ETF options are prohibited in the last 30 minutes of trading. Do-not-exercise / exercise-by-exception requests must reach tastytrade by 3:30pm CT. | T+1 for stocks, ETFs and options; cash accounts day-trade only with settled funds (Good Faith Violation rules apply) | support.tastytrade.com verified 2026-09-25 |
| Interactive Brokers | 17:25 ET — IBKR must receive exercise / lapse requests for US-listed equity options by 5:25pm ET (Option Exercise window or Message Center ticket); exercises and lapses are irrevocable | IBKR simulates expiration under plausible price scenarios; accounts projected to violate margin after settlement may face liquidation of expiring positions on the last trade date, lapsing (non-exercise) of long ITM options, immediate liquidation of underlying positions subject to delivery, and closing-only restrictions. | T+1 (US options: one day) | www.interactivebrokers.com verified 2026-09-25 |
| Webull | 16:00 ET (market close) | Webull Financial LLC reserves the right to close any options position that poses a risk if exercised or assigned, but is not obligated to act — position management remains the account holder's responsibility. | T+1 (next business day for trades placed before 8:00pm ET) | www.webull.com verified 2026-09-25 |
Quick answers
Do I get S&P 500 shares if my SPX 0DTE call expires in the money?
No. SPXW options are cash-settled: intrinsic value × 100 per contract is credited in cash the next business day. No shares or futures are delivered.
What time do SPX 0DTE options stop trading?
4:00pm ET on expiration day (1:00pm ET on early-close sessions), per Cboe's SPX/SPXW specifications.
What price is my SPX 0DTE settled at?
The official S&P 500 closing value on expiration day, computed from the 500 component closes. A 7700 call with a 7712.35 close settles at 12.35 × 100 = $1,235.
What if my SPX 0DTE is out of the money by a few cents?
It expires worthless. There is no threshold beyond the strike: 7699.99 against a 7700 call settles at $0.
When does the SPX settlement cash show up in my account?
The next business day. Many brokers show the pending amount the evening of expiration.
Can I trade my SPX 0DTE after 4:00pm ET?
No. Unlike SPY and QQQ options, which trade until 4:15pm ET, expiring SPXW contracts stop at 4:00pm ET and the closing value is final.
Related
- SPX simulator your strike at seven closes
- Can you get assigned on SPX? European-style, cash-settled
- SPY expires ITM physical, $0.01 auto-exercise
- QQQ expires ITM physical, $0.01 auto-exercise
- SPX vs SPY tax §1256 60/40 arithmetic
- SPX spread settlement both legs in cash, worked table
- Missed the exercise cutoff? OCC 5:30pm ET vs broker windows
- Broker tracker cutoffs and policies, dated
- Session archive every close, dated
- How much can you lose? max loss by position type
- Methodology sources and limits
Expiration-rule changes, by email
One email when a broker or exchange changes an expiration rule we track. Nothing else.