Most traders see the options chain as a wall of confusing numbers. What they miss is that every data point — open interest, strike, premium, volume — tells a story of market psychology and positioning. In Options Chain, Amit Ghosh, founder of Unofficed, brings a structured and lucid explanation of how to interpret the options chain, read open interest shifts, and understand the real battle between call and put writers that defines every market move. Drawing from the Indian derivatives market, this book bridges classroom concepts with live trading relevance. Through practical examples, visual references, and plain-language explanations, readers will learn how strike prices, premiums, and expiries interact to shape opportunity, the psychology behind open interest buildup and unwinding — the "16 Battles" of calls and puts, how to identify support and resistance directly from open interest data, the role of moneyness, intrinsic and extrinsic value, and breakeven points in trade planning, and techniques for applying delta hedging, volatility spreads, and margin optimization for safer positioning. Designed for beginners and intermediate traders, Options Chain lays the foundation for confident, informed participation in derivatives. It is both a reference manual and a mentor-in-print — for those who want to stop guessing and start interpreting what the market is actually saying.