0DTE Options
Zero days to expiration options — the fastest-growing segment of options trading explained
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0DTE Options
0DTE — zero days to expiration — means trading options that expire today. SPX now has options expiring every single trading day. These ultra-short-term options have exploded in popularity, with 0DTE now representing over 40% of total SPX option volume. They offer unique opportunities and unique dangers.
How 0DTE Works
You trade an option in the morning that expires at the close of that same day. There is no overnight risk. The trade opens and closes within hours.
Example: At 10:00 AM, SPX is at 4,500. You sell the 4,450/4,445 put spread expiring today for $0.80 credit. SPX is 50 points above your short strike.
By 4:00 PM, SPX closes at 4,480. Your short strike was never threatened. Both puts expire worthless. You keep $80 per spread.
Total time in the trade: 6 hours. No overnight risk. No earnings gaps. No Fed surprises (unless the meeting was today).
Why 0DTE Has Exploded
No overnight risk. Every position resolves by the close. You go home flat.
High theta. A 0DTE option loses nearly all its time value in a single day. If you are selling, theta is your best friend. A credit spread that would take 3 weeks to decay in a 45 DTE option decays completely in hours.
Capital efficiency. Margin requirements on 0DTE spreads are based on the width of the spread, which can be as narrow as $5. A $5-wide SPX iron condor requires $500 max risk and might collect $100 to $150 in premium. That is a potential 20% to 30% return in one day.
Daily opportunities. With SPX expiring every day, you get a fresh setup every morning. No waiting for weekly or monthly cycles.
The Dark Side
Gamma risk is extreme. 0DTE options have the highest gamma of any options. A 10-point SPX move can double the value of a 0DTE option or cut it in half. If you are on the wrong side, the loss comes fast.
No time to adjust. With a 45 DTE trade, you have days or weeks to roll, adjust, or manage. With 0DTE, you might have minutes. The market moves, your spread goes against you, and the decision must be instant.
Commission drag. Trading daily means 20+ round-trip trades per month. At $0.65 per contract, 4 legs per iron condor, 20 trades per month = $52 per month per contract in commissions. That eats into thin margins.
The 1% day. SPX has 1%+ moves roughly 25 days per year. If you sell 0DTE credit spreads every day, you will face these moves regularly. A 1.5% move can blow through a 30-delta credit spread in an hour.
0DTE Strategies
Strategy 1: Selling Iron Condors
The most popular 0DTE approach. Sell a call spread and put spread around the current SPX price.
Setup at 10:00 AM, SPX at 4,500:
- Sell $4,470/$4,465 put spread for $0.70
- Sell $4,530/$4,535 call spread for $0.60
- Total credit: $1.30 on $5-wide spreads
Max risk: $3.70 per side. Profit zone: 4,468.70 to 4,531.30 (a 62-point range, about 1.4% of SPX).
If SPX stays in that range by 4 PM, you keep $130 per iron condor.
Strategy 2: Buying Straddles for Momentum
Buy a 0DTE straddle at the open and sell it when the market makes a strong move.
Setup at 9:35 AM, SPX at 4,500:
- Buy $4,500 call for $8.00
- Buy $4,500 put for $7.50
- Total cost: $15.50
If SPX moves 25 points by 11:00 AM (to 4,525), the call might be worth $28 and the put worth $2. Total value: $30. Profit: $14.50 (94% return).
But if SPX chops around $4,500 for two hours, theta eats both options. By noon, the straddle might be worth $8. You lost $7.50 (48%) waiting for a move that never came.
Strategy 3: 0DTE Credit Spreads on Catalysts
Before a known event (CPI report at 8:30 AM, Fed decision at 2:00 PM), sell credit spreads far OTM to capture the IV crush after the event.
Setup before CPI at 8:15 AM: Sell a 0DTE put spread 1.5% below SPX. The IV is jacked up for the event. After the number comes out and the initial move happens, IV collapses and the spread deflates.
Caution: If the CPI surprises dramatically, SPX can move 2%+ in minutes. Size very small.
Position Sizing for 0DTE
This is absolutely critical. Because 0DTE trades can go to max loss in minutes, your position sizing must be ultra-conservative.
Rule: Risk no more than 0.5% of your account on a single 0DTE trade.
On $100,000: max risk = $500 per trade. If your iron condor has $370 max risk per contract, trade 1 contract.
Daily loss limit: 1% of account. If you lose $1,000 in a day, stop trading. Walk away. The market will be there tomorrow.
Monthly loss limit: 5% of account. If 0DTE trades are losing you $5,000 in a month, stop and re-evaluate. Something is wrong with your approach, sizing, or timing.
The Realistic 0DTE Trader
A disciplined 0DTE trader might:
- Trade 15 to 18 days per month (skip low-volume days and event days)
- Win 65% to 70% of trades
- Average win: $100 per trade
- Average loss: $250 per trade
- Monthly P&L: (13 wins x $100) - (5 losses x $250) = $1,300 - $1,250 = $50
That is right — $50 per month after a lot of effort. The edge in 0DTE is razor thin. You need hundreds of trades for the edge to compound, and a single blow-up can erase months of gains.
The traders who make real money with 0DTE are those who trade multiple contracts on high-conviction setups (not every day) and have the discipline to cut losers immediately.
Who Should Trade 0DTE?
Yes: Experienced traders who have already mastered 30 to 45 DTE strategies, have fast execution platforms, can monitor positions in real time, and have strict risk rules.
No: Anyone who cannot watch the screen for the full trading session, anyone without at least 1 year of profitable options trading, anyone who gets emotional during fast-moving markets.
0DTE is not a shortcut to profits. It is a specialized niche that rewards discipline and punishes overconfidence. Treat it as one tool in your toolkit, not your entire strategy.
Next: the less exciting but financially critical topic of options and taxes.