Options Theory for Professional Trading

Understanding Call Options

Chapter - 1

A Call Option allows you to lock in a purchase price today while deciding later whether to buy the asset. This chapter explains how Call Options work, who the buyer and seller are, and the key terms every beginner should know.

Essential Terms Every Options Trader Should Know

Chapter - 2

Before trading options, it is important to understand the common terms used in every option contract. This chapter explains the basic terminology that forms the foundation of option trading.

Buying a Call Option

Chapter - 3

Buying a Call Option is a strategy used when you expect the price of an asset to increase. This chapter explains how a Call Option buyer earns profits, manages risk, and decides whether a trade is worthwhile.

Selling a Call Option

Chapter - 4

Selling a Call Option means receiving a premium in exchange for taking an obligation to sell at the agreed price. This chapter explains when traders sell Calls, how their profit and loss works, and why the risk can become very large.

Understanding Put Options

Chapter - 5

A Put Option gives the buyer the right to sell an asset at a predetermined price. This chapter explains how Put Options work, why traders buy them when they expect prices to fall, and how their profit and loss are calculated.

Selling a Put Option

Chapter - 6

Selling a Put Option is generally used when you expect an asset to remain stable or move higher. This chapter explains how Put sellers earn premium, how their profit and loss work, and why this strategy carries significant downside risk.

Understanding Option Payoff

Chapter - 7

An option payoff shows how much a trader gains or loses at different underlying prices. This chapter explains payoff for Call and Put buyers and sellers and how the Strike Price and Premium affect the final outcome.

Choosing the Right Option Strike

Chapter - 8

Not every option strike behaves the same way, even when they belong to the same underlying asset. This chapter explains intrinsic value, ITM, ATM and OTM options, and how an option chain helps traders compare different strikes.

Delta: Measuring Option Price Sensitivity

Chapter - 9

Delta shows how much an option premium is expected to change when the underlying price changes. This chapter explains Delta for Call and Put Options, its range, and how traders use it to understand option sensitivity.

Reading Delta Through Market Movement

Chapter - 10

Delta does not remain fixed as the underlying price changes. This chapter explains how Delta behaves as an option moves from OTM to ATM to ITM and how traders can use this information to make more systematic decisions.

Using Delta to Measure Position Exposure

Chapter - 11

Delta can be combined across multiple option positions to estimate the overall market exposure of a portfolio. This chapter explains position Delta, its relationship with futures, and how Delta can also provide an approximate probability of an option expiring In the Money.

Gamma: Understanding Changes in Delta

Chapter - 12

Delta tells us how an option premium responds to a change in the underlying price, but Delta itself also changes. This chapter introduces Gamma and explains how it measures the rate at which Delta changes.

Gamma and Option Risk

Chapter - 13

Gamma shows how quickly an option's Delta changes when the underlying price moves. This chapter explains why Gamma is highest around ATM options, how it behaves across different strikes, and why high Gamma can create significant risk for option sellers.

Understanding Time Decay in Options

Chapter - 14

Time is an important factor in options because an option has a limited period to become profitable. This chapter explains how the passage of time affects option premiums and introduces Theta, the Greek that measures this effect.

Theta and the Speed of Time Decay

Chapter - 15

Theta measures how much an option's premium changes each day because of the passage of time. This chapter explains how Theta behaves as expiry approaches and why time decay becomes increasingly important for option traders.

Vega: Understanding Volatility Sensitivity

Chapter - 16

Vega measures how sensitive an option's premium is to changes in volatility. This chapter explains how rising or falling volatility affects option prices and why Vega is important when evaluating an option position.

Volatility and Normal Distribution

Chapter - 17

Volatility helps estimate how widely an underlying asset may move over a given period. This chapter explains random price movement, normal distribution, standard deviation and how they can be used to estimate possible price ranges.

Applying Volatility to Trading

Chapter - 18

Volatility and standard deviation can be used to make practical trading decisions instead of simply measuring market movement. This chapter explains how they can help select option strikes and set more systematic stop-loss levels.

Volatility and Vega

Chapter - 19

Volatility can be viewed in different ways, and option traders need to understand these differences before using Vega. This chapter explains historical volatility, expected future volatility, implied volatility and how volatility affects option premiums.

Understanding Implied Volatility

Chapter - 20

Implied Volatility shows the level of future price movement that is reflected in an option's market price. This chapter explains how IV is derived, why it changes, and how traders use it while evaluating options.

Reading Volatility Across Strikes

Chapter - 21

Implied Volatility can differ across Strike Prices and expiry periods, so looking at a single IV number is not always enough. This chapter explains the volatility smile and volatility cone, and how traders can use them to identify relatively expensive or cheap options.

Understanding Volatility Skew

Chapter - 22

Volatility is not always the same for Calls and Puts at different Strike Prices. This chapter explains volatility skew and how differences in IV across strikes can reveal how the market prices risk.

Putting Option Theory Into Practice

Chapter - 23

This chapter brings together the key ideas from the module through practical option-trading case studies. It shows how traders can combine direction, volatility, Delta and market events while evaluating an option trade.