0DTE Options Decoded
A Practical Guide to SPX Trading, the Greeks, and Machine Intelligence.
View on Amazon Kindle ↗Harmohit Lyall · SPX research
Read the market.
Explore the mechanics.
A practical introduction to the books and their open-source companion. Explore price structure, option sensitivities, and risk in an interactive browser demo.
Explore the dashboard →Discover the booksNo sign-in or market-data subscription needed for the sample.
SYNTHETIC SAMPLE · All prices, option quotes, news, and open interest in this demo are invented. This is an educational research tool, not a live market feed or trade recommendation.
A 42-second guided tour
See the dashboard in action.
Watch the session map, analytics panels, options laboratory, and Gamma/OI ladder. This silent walkthrough includes explanatory overlays and uses invented synthetic data throughout.
Session structure
Move through an invented session and compare price behavior, playbook checks, and EMA retests.
Gamma & open interest
Switch between the conventional gamma exposure proxy and unsigned OI in a descending-strike ladder.
Understand the risk
Edit option legs and inspect expiration payoff. Explore network context and see model availability clearly.
Two complementary perspectives
The 0DTE Options books
SPX is the focus, with SPY market context.
0DTE Options Engineered
The Mathematics, Code, and Models Behind SPX Trading Analytics.
View on Amazon Kindle ↗