408 midpoint-priced trades · +$12.09 average · profit factor 1.34 · maximum drawdown −$698
May 2022–2023 development
2024–Aug 2026 validation
SPX structure · SPXW option quotes · 2005–2026
Twenty-one years of SPX history identified a selective ORB20 setup. Four years of one-minute SPXW quotes now show how its actual 0DTE credit spreads behaved from entry to exit.
Important: historical midpoint replay is evidence, not a promise of live fills or future profit. Figures are before fees.
New research · what to do after the first break
Imagine the opening range as a fence. Price must close on the other side of that fence. A tiny step over it is not enough—but it does not always mean the idea is dead.
408 trades+$12.09 average before fees
161 trades+$2,995 gross · +$18.60 average · PF 1.57
A strong first close needs to finish 3 points beyond the edge. If it does not, the patient route needs three closes in a row outside the range, with the third at least 2 points beyond the edge.
Keep this separate from the core: the rescue route is not included in the validated 408-trade headline. Adding it would produce 569 trades and +$7,928 gross midpoint replay, but the 10% threshold was the best tested cell in a sweep. The safer conclusion is to freeze it as a separate paper test—not to treat the combined result as validated or live-ready.
What survived scrutiny
The useful signals describe market acceptance and structure. Most familiar indicators—including VIX and RSI—were weaker on their own.
A close barely outside ORB20 was weak. The clearest practical threshold tested was a close at least 15% of the ORB20 width beyond the boundary.
When the opening range had no clear directional bias, only 51.3% of first breakouts remained beyond the range at the close, versus a 57.9% long-sample baseline.
Repeatable weak condition
A gap at least 1.5 times ORB20 reached 64.5% close persistence. When the breakout also followed the gap direction, the pairwise result reached 70.2%.
Promising · needs paper test
A prior NR7—yesterday had the narrowest range of the last seven sessions—improved close persistence to 60.6%. Prior inside days also improved run-versus-give-back.
Stable supporting context
After a strong confirmation, a shallow retest was usually acceptable. A later close reaching the middle of ORB20 or deeper changed the character of the setup.
Before the entry
Do not assume the setup has failed. What price does inside ORB20 tells us mainly whether an entry is still likely to appear—not whether that later entry will win.
How to read this: depth is a warning that the entry may never arrive. If the original trigger is eventually broken, the data does not yet justify cancelling it solely because of the pullback.
Plain conclusion: the opposite trigger is common, but its follow-through is close to a coin toss. A stronger opposite close did not improve it, so this is not a high-confidence reversal trade.
Original versus research-informed
The option replay supports a simpler first-breakout strategy with explicit entry-quality and exit rules. It remains a paper-forward candidate, not a guarantee.
Recommended next action: freeze the core and paper-test the rescue as a separate route. Do not add VIX or ORB-size skips. No live bot rules have been changed.
Evidence ledger
Not every attractive percentage deserves equal trust. This ledger separates broad, stable findings from ideas that need a fresh test.
Method, without the jargon
Cash SPX five-minute candles from 2005–2026, plus one-minute SPXW 0DTE bid/ask quotes from May 2022–August 2026.
First, a candle closes beyond ORB20. Then a later candle breaks the confirmation candle’s extreme before noon.
Price is still beyond the relevant opening-range boundary at noon or the cash close.
Highlighted long-sample effects had to point the same way in 2005–18, 2019–23 and 2024–26.
The entry uses the first available one-minute SPXW quote at or after the completed five-minute trigger bar. Results use the selected spread’s midpoint and observe target or stop on one-minute quotes; if neither is reached, the replay exits at the last valid quote near session close. This is a historical proxy, not a record of executable fills.
If ORB20 is 20 SPX points wide, 15% is 3 points. A bullish confirmation would need to close 3 points above the ORB20 high. A bearish confirmation would need to close 3 points below its low.
It starts 40% of the way back through ORB20 from the broken boundary. On a 20-point range, that begins 8 points inside. It is the same middle 20% used by the original setup’s retracement logic.
Thousands of combinations were tested. Some winners will occur by chance. Single factors are more credible than combinations, and every proposed rule still needs a frozen forward paper test.
The honest boundary
The archive now contains 28.3 million real SPXW 0DTE quote rows. It can reconstruct spread selection and minute-by-minute targets and stops, but not the exact order of prices inside a minute.
The preferred candidate averaged $12.09 gross per trade. A hypothetical $4 round-trip cost reduces the result to about $8.09 per trade, while a natural bid/ask replay lost $30,130. Neither is an exact live-fill estimate, so the rules still need frozen forward paper validation.