0DTE Scalper

True 0DTE (daily expiration) options are NOT available on the ASX like they are in US markets. You can trade XJO options on their monthly expiration day (3rd Thursday) or use limited weekly options when available. Many Australian traders access US markets (SPX, SPY) for daily 0DTE opportunities.

You should only trade 0DTE with money you can afford to lose completely. A starting capital of A$5,000-10,000 allows proper position sizing (0.5-1% risk per trade = A$25-100 per trade). Never trade 0DTE with essential funds.

Without proper strategy and risk management, yes. With disciplined rules, position sizing, stop losses, and a statistical edge, it can be a legitimate (but high-risk) trading approach. The key difference is having a tested strategy with positive expectancy over many trades.

If the option is in-the-money (ITM), it will be worth its intrinsic value. If out-of-the-money (OTM), it expires worthless (100% loss). For XJO options, settlement is cash-based. It's generally better to exit before the final hour to avoid extreme gamma risk.

0DTE offers extreme leverage - small moves create large percentage returns. For skilled traders with proper risk management, the rapid feedback loop allows many trades per day, potentially building edge over time. It's also exciting, which attracts some traders (though excitement isn't a good trading reason).

Expected move ≈ ATM Straddle Price × 0.85. For 0DTE, this represents the expected range for the remaining trading session. Compare to recent intraday ranges to assess if options are over/underpriced.

ABSOLUTELY. Stop losses are non-negotiable for 0DTE. The speed of losses means a 50% stop can become 80% in minutes if you hesitate. Set stops at 30-50% of premium paid and HONOR them. Mental stops don't work - use actual orders.

Afternoon (2-4 hours before close) is optimal for premium selling. Theta decay accelerates dramatically, and if the market has established a range, you have evidence it may continue. Earlier entries face more time for adverse moves.

Straddle (ATM): Maximum gamma, higher cost, profits from smaller moves. Strangle (OTM): Lower cost, needs larger move to profit, lower gamma. For 0DTE, straddles are preferred if you expect any significant move because gamma is the primary profit driver.

Gamma and theta are inversely related on 0DTE. High gamma options (ATM, near expiry) also have high theta. Long gamma positions pay theta cost every hour. You need realized volatility to exceed implied to profit from gamma while paying theta. This is the core trade-off.

Sum (Open Interest × Gamma × Contract Multiplier) across all strikes, adjusting for dealer positioning (net short or long at each strike). Resources like SpotGamma provide this for US markets. For ASX, you'd need to build your own model from open interest data, which is less precise due to lower volume.

Optimal frequency depends on gamma level and transaction costs. Higher gamma = more frequent hedging. A common approach: hedge when |delta| exceeds a threshold (e.g., ±0.15-0.20). Too frequent = high costs eat profits. Too infrequent = miss gamma captures.

Methods include: 1) Recent realized vol (last 1-2 hours), 2) Time-of-day patterns (volatility U-shape), 3) News/event calendar, 4) Correlation with global markets, 5) Technical setup (breakout vs range). HAR or GARCH models can formalize this.

Methods include: 1) Defined-risk structures only, 2) Strict daily loss limits, 3) Long vol tail hedges (cheap OTM puts), 4) Correlation monitoring, 5) Circuit breakers that stop trading after X% loss, 6) Position size limits that ensure even 100% loss is survivable.

Yes, for: 1) Intraday direction prediction, 2) Volatility forecasting, 3) Optimal entry timing, 4) Anomaly detection. Challenges: Limited data (only one 0DTE per day historically), regime changes, overfitting, and execution slippage. Requires significant expertise to implement well.