0DTE Options Volatility and Technical Analysis Foundations

A Study of Intraday Indicators, Compression, and Range Expansion

0DTE options volatility, intraday indicators, and technical analysis foundations - explored in a calm, educational framework for interpreting compression, range expansion, and session behavior in modern markets. This book studies how commonly used tools such as ATR, bands and channels, moving averages, momentum indicators, volume, breadth, VWAP, and key session reference levels can be used to describe volatility states and intraday context without turning charts into promises.

Readers may learn about:

• How “volatility” differs from direction, and why range and pace can change without clean trends

• ATR as a baseline for comparing today’s movement to recent behavior

• Bollinger Bands and Keltner Channels as ways to visualize dispersion, compression, and widening conditions

• Trend structure as a way to describe continuity, chop, and one-sided versus two-sided movement

• RSI and MACD as pace descriptors rather than timing guarantees

• Volume and relative volume as participation context across different phases of the day

• Breadth and internal participation, including what it can mean when an index moves on narrow leadership

• VWAP and anchored references as intraday center-of-gravity context, plus prior day, overnight, and opening range landmarks

• Time-of-day effects and scheduled timestamps as environmental factors that can change volatility texture

• A three-layer reading language - state, location, and participation - for describing intraday behavior consistently

All examples and scenarios are fictional and illustrative. The focus throughout is observation and interpretation: building clearer language for what markets are doing intraday, especially in time-compressed sessions where volatility can shift quickly.