0DTE Scalper

Some traders do, but most don't. 0DTE requires exceptional skill, discipline, and risk management. Studies suggest most retail 0DTE traders lose money. If you're new, expect a significant learning curve and potential losses while developing skills. Paper trade extensively first.

To trade freely without PDT restrictions, you need $25,000+ in a margin account. However, you can start with less using a cash account (limited by settlement) or by limiting trades to 3 per 5 days. Realistically, $25K-$50K provides enough capital for proper position sizing and risk management.

Neither is inherently better. Buying requires being right about direction AND timing - difficult but unlimited profit potential. Selling collects theta but has gamma risk - easier to win but losses can be large. Most beginners start with buying to limit risk to premium paid, then graduate to selling with defined risk spreads.

If it expires OTM, it's worthless - you lose all premium. If ITM for SPY/stocks, you may be assigned (you'll own or owe shares). SPX settles to cash - you receive or pay the difference. Generally, you should close positions before expiration to avoid assignment complications and final-minute volatility.

Extreme gamma. With no time left, delta changes rapidly with every price tick. An option that's ATM can go deep ITM or worthless with a 1-2% stock move. This leverage works both ways - positions can double or go to zero in minutes.

Watch the first 30-60 minutes. Trending days: higher highs/lows (uptrend) or lower highs/lows (downtrend), price stays above/below VWAP, strong volume on directional moves. Range days: price oscillates around VWAP, failed breakouts, lower volume. Use this identification to select appropriate strategy.

Limited options due to time: (1) Close for loss immediately if stop hit, (2) Roll to wider strikes if possible (rarely practical on 0DTE), (3) Close the tested side and keep the unthreatened side. Generally, closing for a controlled loss is better than hoping for reversal on 0DTE.

Gamma scalping works on choppy, volatile days with multiple swings but no clear trend. If you buy a straddle and the market trends, gamma scalping will lose (you keep hedging the wrong direction). On range-bound days with oscillation, scalping captures the movement. Assess day type before choosing approach.

Depends on your style and account size. SPY: smaller contracts, tighter spreads, better for smaller accounts and frequent scalping. SPX: larger contracts, no early assignment, cash-settled, better tax treatment, 15 extra minutes. Premium sellers often prefer SPX; active scalpers often prefer SPY liquidity.

For longs: 25-50% of premium is common. Too tight and normal fluctuation stops you out; too loose and you lose everything. For shorts: 100-150% of credit (position value 2-2.5x credit). Account for the rapid price movement and set stops at levels where your thesis is clearly wrong, not just at random percentages.

Monitor sweep orders (aggressive large orders crossing multiple price levels) as potential directional signals. Large block trades near market-on-open can indicate institutional positioning. Unusual volume at specific strikes may indicate positioning around key levels. Use as one input, not sole decision factor.

Negative dealer gamma means moves will be amplified. For longs, this is favorable - enter with trend and expect continuation. For shorts, it's dangerous - widen strikes significantly or avoid selling premium. Monitor gamma exposure estimates (available from various services) and adjust strategy accordingly.

Reduce or eliminate 0DTE positions before announcement (usually 2:00 PM). If trading after, expect elevated volatility and wider ranges. Short premium is risky; directional longs can work with the post-announcement trend. Consider waiting 15-30 minutes after announcement for direction to establish before entering.

Limited by liquidity and market impact. SPY/SPX can handle significant size but large orders will move the market. For retail traders with under $1M, liquidity isn't constraining. For larger accounts, scaling in/out and using limit orders becomes essential. Institutional-scale 0DTE trading requires sophisticated execution.

Track net delta exposure across all 0DTE positions. Multiple long calls in SPY/QQQ/tech stocks = concentrated long market exposure. Set aggregate exposure limits (e.g., max net 50 delta). Use sector/index diversification or opposing positions to manage total exposure. One market move affects all correlated positions simultaneously.