0DTE Options Explained - Same-Day Expiration and Its Risks
Reviewed by Leon Moyer - Published October 9, 2026 - Last reviewed October 9, 2026
In this lesson
Explain what a 0DTE option is, name the products that list daily expirations, and work out the cost, break-even and maximum loss of a same-day trade.
0DTE options (zero days to expiration) are option contracts that expire at the end of the trading day on which you trade them. Any option becomes a 0DTE option on its final day, and a few products, led by the S&P 500 index options SPX and XSP, now list a new expiration every trading day.
A 0DTE trade is settled within hours. That makes the premium small, the price swings large, and the most likely outcome for a cheap out-of-the-money option a total loss by the close.
The risk of rapid total loss. A 0DTE option you buy can lose 100% of its premium in a single afternoon, and often does. A 0DTE option you sell without a protective leg can lose many times the premium within minutes: an uncovered short call has no limit on its loss, and an uncovered short put can lose up to the strike x 100 minus the premium. Size every same-day trade so that losing all of it is acceptable.
This module assumes Courses 1 and 2. Its lesson on defined-risk 0DTE trades also builds on Credit Spreads Explained - Bull Put and Bear Call Spreads (Course 2) and Iron Condor Explained - Selling a Range With Defined Risk (Course 3); review those first if spreads are new to you.
What does 0DTE mean in options?
DTE stands for days to expiration: the time left before an option contract expires. A 30 DTE option has a month to go; a 0DTE option expires today.
There is nothing special about the contract itself. An XYZ option expiring this Friday is a 7 DTE option the Friday before and a 0DTE option on Friday morning. What changed is how often expirations are listed: some products now list one every weekday. FINRA's investor guide, Zeroing In on an Options Trading Strategy: 0DTE, describes the strategy as opening a position on the option's expiration day.
Which underlyings have daily expirations?
Daily expirations are concentrated in broad market index options and the largest index ETFs:
Sources: Cboe's SPX Weeklys specifications (Monday to Friday expirations, cash-settled, European-style), Cboe's 2022 announcement (XSP daily), and the short-term series rule in the Cboe Options rulebook (Rule 4.5(d)), which lets the exchange list Monday, Tuesday, Wednesday and Thursday expirations on SPY, QQQ and IWM. It allows fewer on some other ETFs and the largest qualifying stocks. Listings change; check the Weeklys list and your chain.
How a product settles matters a great deal on expiration day. SPX and XSP options pay the in-the-money amount in cash and, being European-style, cannot be exercised early. ETF options deliver shares and can be exercised at any time. 0DTE Expiration and Assignment works through what that difference means after the close.
Why are 0DTE options so cheap?
An option's price is intrinsic value plus time value. An at-the-money option has no intrinsic value, so its whole price is time value, the market's price for the chance of a favorable move before expiration. With hours left, that chance is small, so the price is small.
Worked example
0DTE example: the same XYZ 50 call with less time
New setup for this module: XYZ trades at $50. Using the Black-Scholes model at 30% implied volatility and a 4.5% rate, the at-the-money XYZ 50 call is worth:
On expiration morning the call costs less than a tenth of its 30-day price. It is not a bargain: it is cheap because it has only one session to work.
Illustrative and hypothetical. The ticker and prices are invented for teaching, and the figures exclude commissions, fees, margin interest and taxes, which reduce real results. Past or hypothetical outcomes do not indicate future results.
The same XYZ 50 call with less and less time left
Model value per contract
The model counts the 6.5 hours as calendar time at a flat 30% volatility. Real same-day prices also reflect scheduled events, so treat these figures as an illustration.
How does a 0DTE trade make or lose money?
Suppose you buy that XYZ 50 call for $0.16 with 6.5 hours left, a cost of $16. At the close it is worth only its intrinsic value: XYZ minus $50, or zero.
- Maximum loss: the $16 premium, if XYZ closes at or below $50.
- Break-even: $50 strike + $0.16 premium = $50.16.
- Maximum profit: no fixed limit; each $1 XYZ closes above $50.16 adds $100.
A 50-cent move decides everything. That is the appeal: a small, defined cost with a chance of returning several times it. It is also the trap: if XYZ drifts sideways, the whole premium is gone, and a string of small total losses adds up quickly.
XYZ 50 call bought for $0.16 on expiration morning
Hover or tap the chart, or focus it and use the arrow keys, to read any price.
Open this trade in the free calculatorShow as table
Can you lose more than you pay on a 0DTE option?
Not when you buy one: a long call or put can lose at most its premium. Selling is different. A trader who sold that XYZ 50 call without owning shares collected $16, and would lose $84 if XYZ closed at $51 and $484 at $55. An uncovered short call has no fixed maximum loss. Same-day sellers usually cap that risk with spreads, the subject of Defined-Risk 0DTE Trades.
FINRA adds two warnings. A buyer "could lose the entire premium paid" if the underlying does not move as expected, and if you lack the funds or shares to meet an exercise or assignment, your broker "may liquidate the position prior to the close" at a price you do not choose.
Who trades 0DTE options, and why?
Cboe's 0DTE resource page reports that well over half of SPX volume trades 0DTE. Traders use same-day options to:
- Express a short-term view with a small, known cost.
- Collect time decay by selling premium that will be gone by the close, usually inside a spread.
- Hedge a single day's risk, such as a scheduled economic report, without paying for weeks of protection.
Gamma and Theta on Expiration Day explains why same-day prices move so violently.
Check your understanding
You buy a 0DTE 100 put for $0.40. What is your break-even at the close, and what is the most you can lose?
Show answer
Break-even is $99.60, the strike minus the premium. The most you can lose is the $40 premium, if the underlying closes at or above $100.
An option that expires this Friday is a weekly option. Is it ever a 0DTE option?
Show answer
Yes. On Friday, its expiration day, it is a 0DTE option. Any option becomes 0DTE on its final trading day; daily-expiration products simply offer one every day.
Why does an at-the-money call cost much less with 6.5 hours left than with 30 days left?
Show answer
Its price is all time value, and with hours left there is little time for the stock to move. In the example the XYZ 50 call falls from $181 with 30 days left to $16 on expiration morning.
Key takeaways
- A 0DTE option expires on the day you trade it. SPX and XSP list one every trading day; SPY, QQQ and IWM list Monday to Thursday expirations plus Friday weeklies.
- Cash-settled index options and share-settled ETF options behave very differently at the close.
- 0DTE options are cheap because they have almost no time left, not because they are good value.
- A long 0DTE option can lose its whole premium in hours; an uncovered short one can lose many times the premium.
Common questions
Are 0DTE options good for beginners?
Generally not. A 0DTE option can lose its whole premium within hours, prices swing sharply on small moves, and there is no time to recover from a mistake. Many educators suggest learning on longer-dated options, and in small size, first.
Can you trade 0DTE options on any stock?
Any listed option becomes a 0DTE option on its final trading day, so you can trade a stock's weekly or monthly option on its expiration day. Expirations on every weekday are listed only on a few products, mainly S&P 500 index options and a handful of large ETFs such as SPY, QQQ and IWM.
Why do 0DTE options lose value so fast?
With hours left there is almost no time for the underlying to move, so an option's time value drains quickly. If the underlying is at or below a call's strike (above a put's) at the close, the option expires worthless.
What time do 0DTE options expire?
On a regular day, expiring PM-settled S&P 500 index options (SPXW and XSP) stop trading at 4:00 p.m. Eastern, as do most expiring stock options, while expiring options on some broad-market ETFs, such as SPY, QQQ and IWM, can trade until 4:15 p.m. Exercise decisions can be made until a later cutoff, 5:30 p.m. Eastern at the latest, and many brokers set earlier deadlines. Check the product's specifications and your broker's rules.