0DTE Straddles Foundations

Studying Greeks, Pricing Shifts, and Trading Conditions in 0DTE Options

0DTE straddles sit at the crossroads of options pricing, intraday volatility, and a fast-moving expiration clock. 0DTE Straddles Foundations studies how same-day straddles are priced and repriced through the session, with clear explanations of the Greeks, pricing shifts, and trading conditions that shape what appears on an options chain.

Written in plain English for beginners, this book treats the straddle premium as a market-made package, shaped by underlying movement, time pressure, uncertainty pricing, and the bid-ask environment. All examples are illustrative and fictional, focusing on interpretation rather than predictions.

Topics include:

• Readers may learn about 0DTE straddles as a pricing structure, including what “at the money” means in practice
  
• Readers may learn about delta and gamma as changing sensitivity near the strike into expiration
  
• Readers may learn about theta as time-value pressure, including why decay can feel uneven intraday
  
• Readers may learn about vega and implied volatility as the market’s shifting price for uncertainty
  
• Topics include bid-ask spreads, liquidity, and quote behavior, and how they can affect what the “mid” price appears to do
  
• Topics include event-day repricing and why premiums can change quickly before and after scheduled releases
  
• Readers may learn about common beginner misreadings (break-evens as targets, mid-price assumptions, “pinning” talk) and more neutral ways to describe what changed
  

This is an educational study of 0DTE options pricing behavior, designed to help readers describe what they see on the screen with clearer language and steadier context.