0DTE means "zero days to expiration." A 0DTE option is an options contract that expires at the end of the current trading day. The contract may have been listed days or weeks earlier, but it becomes 0DTE when its expiration date arrives.
Traders use 0DTE options for short-term directional trades, hedges and income strategies. Their value can change quickly, and a position can gain or lose most of its value within hours.
0DTE Options at a Glance
| Feature | What it means |
|---|---|
| Full name | Zero days to expiration |
| Expiration | The option expires today |
| Typical holding period | Several minutes to one trading session |
| Main advantage | Direct exposure to an intraday price move |
| Main risk | Fast time decay and sharp price changes |
| Common strategies | Buying calls or puts, credit spreads and iron condors |
| What to check first | The contract's expiration and settlement rules |
How Do 0DTE Options Work?
An option gives the buyer the right, but not the obligation, to buy or sell an underlying asset at a specified strike price before or at expiration. A call generally benefits from a rise in the underlying asset, while a put generally benefits from a decline.
A 0DTE option has less than one full trading day left before expiration. Its price can therefore react sharply to:
- The underlying asset's price
- The strike price
- Implied volatility
- The time remaining before expiration
- Whether the option is in the money or out of the money
A trader does not have to open a 0DTE position at the market open. The contract can be bought or sold at any point during the day while it is still trading.
A Simple 0DTE Example
Assume a hypothetical stock is trading at $100.
You buy a same-day $100 call for a premium of $0.40 per share. A standard equity option usually represents 100 shares, so the premium would be about $40 before fees.
At expiration:
- If the stock remains below $100, the call may expire worthless.
- If the stock rises above $100, the call has intrinsic value.
- The approximate breakeven price is $100.40. The stock must rise above the strike by enough to cover the premium.
Getting the direction right is not enough. The stock could rise, but the call could still lose most or all of its value if the move is too small or happens too late in the session.
Why Do Traders Use 0DTE Options?
Traders use 0DTE options for several reasons:
- Short-term directional trading: A trader can take a position on whether an index, ETF or stock will rise or fall during the same session.
- Event hedging: Investors can use same-day options around scheduled market events or portfolio risks.
- Defined-risk trades: Buying an option limits the maximum loss to the premium paid.
- Income strategies: Some traders sell defined-risk spreads or other combinations designed to profit when the underlying stays within a certain range.
- No overnight exposure: Closing the position before the market closes can avoid carrying the trade overnight.
Cboe lists call spreads, put spreads, iron condors and outright calls or puts among the approaches used with 0DTE options.
What Are the Main Risks of 0DTE Trading?
Rapid Time Decay
Time decay, also called theta, accelerates as expiration approaches. A 0DTE option can lose value quickly even when the underlying asset barely moves.
Extreme Price Sensitivity
Near-the-money 0DTE options can react sharply to small movements in the underlying asset. Cboe describes these contracts as becoming extremely sensitive to movements in the underlying index as expiration approaches.
Total Loss for Option Buyers
A buyer of a 0DTE call or put can lose the entire premium paid if the option expires worthless. The Options Industry Council identifies the premium paid as the buyer's maximum defined loss, excluding transaction costs.
Assignment Risk for Option Sellers
Selling a 0DTE option creates an obligation. Equity and ETF options are generally American-style, which means the holder may exercise before expiration. A short option can therefore be assigned before the trading day ends.
At expiration, the Options Clearing Corporation generally uses an exercise-by-exception process for equity options that are at least $0.01 in the money, unless contrary instructions are provided. Brokerage procedures and deadlines can differ.
Settlement Differences
Some index options settle in cash rather than delivering shares. Other options can result in shares being bought or sold if they are exercised or assigned.
Before trading, check whether the contract is:
- Cash-settled or physically settled
- American-style or European-style
- Subject to automatic exercise
- Subject to specific broker cut-off times
The 0DTE label tells you how much time remains. It does not tell you how the contract settles or whether assignment is possible.
0DTE Options Versus Regular Options
| Characteristic | 0DTE option | Option with more time remaining |
|---|---|---|
| Time to expiration | Less than one trading day | Several days, weeks or months |
| Time decay | Very fast | Usually slower |
| Price sensitivity | Often very high | Generally lower |
| Overnight risk | Can be avoided by closing the same day | Often present if held overnight |
| Margin for sellers | Depends on the strategy and broker | Depends on the strategy and broker |
| Time to recover from a wrong move | Very limited | Greater flexibility |
Every listed option eventually reaches its expiration day. 0DTE is not a separate asset class or a standalone strategy. It describes an option's remaining time until expiration.
Is 0DTE Trading Suitable for Beginners?
0DTE trading is generally a poor starting point for anyone who does not already understand option pricing, spreads, assignment, settlement and position sizing. The short time frame leaves little room to adjust a losing trade.
Before trading 0DTE options, a trader should know:
- The maximum possible loss
- The breakeven price
- The expiration time
- The contract multiplier
- Whether the position can be assigned
- Whether the option settles in shares or cash
- The broker's exercise and assignment procedures
Paper trading and defined-risk strategies can reduce the consequences of an error, but they do not remove the risks of live trading.
Bottom Line
The speed of 0DTE options is both their appeal and their main risk. Before placing a trade, verify the expiration time, settlement method, assignment rules, breakeven price and maximum possible loss. If you cannot explain those terms before submitting the order, the position is not ready to trade.