mphinance 0DTE Day-Trading Flow
Ghost Alpha A+/A signals → Tradier XSP 0DTE options → same-day close.
Why XSP
XSP (Mini-SPX) is 1/10th of SPX, cash-settled / European (no assignment risk), with 0DTE M/W/F on Tradier. Cheap enough for a small account. Fallback: if XSP isn't tradeable, use SPY 5+ OTM ($0.10–$0.30).
Position sizing (example: $75 account)
| Rule | Value |
|---|---|
| Max per trade | $30 |
| Buffer | $10 |
| Trades per day | 2 sequential (never concurrent) |
| Strike | 2–3 OTM ($0.15–$0.50/contract) |
| Max daily loss | $60 (2 full losers = walk away) |
Entry — ALL must hold
Ghost Alpha Grade ≥ B on SPY 5min
AND signal = mega_bull OR mega_bear
AND RVOL > 1.2
AND time 9:30–11:30 AM ET
AND trend_age < 15 bars
AND no open 0DTE position
Exit cascade — first match wins
| # | Type | IF | THEN |
|---|---|---|---|
| S1 | 🔴 Hard stop | Loss ≥ -50% | SELL (non-negotiable) |
| S2 | 🔴 Grade death | Grade → D/F | SELL (thesis dead) |
| S3 | 🔴 Reversal | Signal flips bull↔bear | SELL (wrong side) |
| T1 | ⏰ EOD | Time ≥ 2:30 PM ET | SELL (theta cliff) |
| P1 | 🟢 Double | Gain ≥ +100% | SELL (take the W) |
| P2 | 🟢 Fading | Gain ≥ +30% AND Grade → C | SELL (lock it) |
| P3 | 🟢 Afternoon | Gain ≥ +50% AND time > 1 PM | SELL (theta) |
| T2 | ⏰ Dead money | Time ≥ 12 PM AND ±10% | SELL (free up trade 2) |
Re-entry: Trade 2 only if Trade 1 closed, buying power ≥ $20, and a new A+/A signal fires. Two losers → DONE for the day.
Guardrails (NON-NEGOTIABLE)
Max 1 open position · auto-close 2:30 PM ET · no averaging down EVER · Grade floor B · entries 9:30–11:30 AM only · no Friday 0DTE (witching risk).
Tradier order reference
Option symbol format: XSP260310C00675000 = XSP · 2026-03-10 · Call · $675.
# Today's chain
curl -s -H "Authorization: Bearer $TRADIER_TOKEN" \
"https://api.tradier.com/v1/markets/options/chains?symbol=XSP&expiration=$(date +%Y-%m-%d)"
# Buy to open
curl -s -X POST -H "Authorization: Bearer $TRADIER_TOKEN" \
"https://api.tradier.com/v1/accounts/$ACCOUNT_ID/orders" \
-d "class=option&symbol=XSP&option_symbol=XSP260310C00675000&side=buy_to_open&quantity=1&type=limit&price=0.35&duration=day"
Pull
TRADIER_TOKEN/ACCOUNT_IDfrom VaultGuard — see AGENTS.md.
Pre-session checklist
- Venus healthy; buying power confirmed
- XSP chain loads on Tradier; L2 options active
- Ghost Alpha on SPY 5min in TradingView
- First mega signal → pick 2–3 OTM, premium $0.15–$0.50, Grade ≥ B
- Apply exit cascade · screenshot entry for blog · close all by 2:30 PM ET · log results
Source
Full guide: 0DTE_TRADING_FLOW.md.
"0DTE options are like Mike Tyson — rich in 5 minutes or knocked out in 3. The difference is whether you have a plan when you walk in the ring." — Sam 👻