0DTE Options Automation

What is 0DTE Trading?

0DTE (Zero Days to Expiration) refers to options that expire the same day you're trading them. These contracts experience extreme time decay and can move very quickly, offering both high profit potential and high risk.

• Options expire at market close (4:00 PM ET)
• Time value decays to zero throughout the day
• High gamma means large price swings
• Lower premium cost but higher risk
• Popular on SPX, SPY, and QQQ
• Not suitable for beginners

Optimal Entry Windows for 0DTE

Timing is everything with 0DTE options:

Times to Avoid

• First 30 minutes (9:30-10:00 AM): Extreme volatility, wide spreads
• Last 30 minutes (3:30-4:00 PM): Too little time value left
• Right after major economic data releases

Optimal Entry Windows

• Morning: 10:00 AM - 12:00 PM (after opening volatility settles)
• Early Afternoon: 12:30 PM - 2:00 PM (consistent price action)
• Mid-Afternoon: 2:00 PM - 3:00 PM (last good window)
• Avoid entering after 3:00 PM

Fast Execution Techniques

Speed matters with 0DTE. Every second counts:

• Use market orders for liquid strikes (SPY, SPX)
• Use limit orders at midpoint for wider spreads
• Pre-configure your bots before market open
• Test webhook latency in paper mode
• Monitor RelayDesk dashboard in real-time
• Have direct access to Alpaca for manual intervention
• Use smaller position sizes for faster fills

Managing Theta Decay

Time decay is your enemy (or ally) with 0DTE:

Long Options (Buying)

• Theta decay accelerates as expiration approaches
• Plan to close within 1-3 hours
• Tighter take-profits than multi-day trades
• Don't hold losers hoping for recovery
• Time works against you every minute

Short Options (Selling)

• Theta decay works in your favor
• Can profit from time passage alone
• Higher risk of assignment if ITM
• Need more capital (selling premium)
• RelayDesk currently optimized for long options

Intraday Risk Controls

0DTE requires stricter risk management than multi-day trades:

Position Sizing

• Use 0.5-1% risk per trade (half your normal size)
• Smaller positions allow for faster execution
• Can take more setups throughout day
• Less stressful with smaller size

Daily Loss Limits

• Set daily loss cap at 2-3% of account
• Use "Accumulated Losses" mode to preserve gains
• Stop after 2-3 consecutive losses
• Don't revenge trade
• Live to trade another day

Stop Losses

• Tighter stops than multi-day: -20% to -30%
• Quick stop-outs are normal and necessary
• Don't widen stops hoping for recovery
• Exit immediately if plan violated

Time Stops

• Close all positions by 3:30 PM
• Or set 1-2 hour max hold time
• Prevents holding into close
• Forces profit-taking discipline

0DTE Strategy Examples

Morning Momentum

Trade early directional moves after opening volatility:

• Entry window: 10:00 AM - 11:00 AM
• TP1: +30% (close 50%)
• TP2: +50% (close 50%)
• Stop: -25%
• Time stop: 12:00 PM
• Move to breakeven after TP1

Lunch Reversal

Fade overextended moves during lunch hour:

• Entry window: 12:00 PM - 1:00 PM
• TP1: +25% (close 60%)
• TP2: +40% (close 40%)
• Stop: -20%
• Time stop: 2:30 PM
• Quick in and out

Power Hour

Catch final hour directional moves (advanced only):

• Entry window: 2:30 PM - 3:00 PM
• TP1: +20% (close 70%)
• TP2: +35% (close 30%)
• Stop: -15%
• Time stop: 3:45 PM
• Very tight management required