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The Geeks of Finance Library

Every guide, course lesson, and deep dive we publish, organized by topic. Start with the fundamentals or jump straight to the tools that give retail investors an edge.

Course 1 · Foundations of Options

Start here. The core mechanics, taught in order.
2 articlesView all →
LESSSON 1

Foundations of Options: Core Concepts

What an option is, the difference between calls and puts, and the vocabulary behind every trade.
LearnBeginner
LESSSON 2

Foundations of Options: Market Mechanics

How options are actually bought and sold — the chain, expiration, exercise, and assignment.
LearnBeginner

Course 2 · Options Pricing & the Greeks

What actually moves an option’s price.
7 articlesView all →
LESSSON 1

The Greeks: An Overview

Meet delta, gamma, theta, and vega — the four forces behind every price move.
LearnBeginner
Lesson 2

Delta

Directional exposure and the closest thing options have to a probability gauge.
LearnBeginner
Lesson 3

Gamma

How delta itself changes — and why dealers care so much about it.
LearnIntermediate
Lesson 4

Theta

Time decay, and how it quietly works for or against your position.
LearnBeginner
Lesson 5

Vega

Sensitivity to volatility, and why it can dominate a trade around earnings.
LearnIntermediate
LESSSON 6

Rho

The interest-rate Greek — small, but worth understanding
LearnIntermediate
Lesson 7

Putting the Greeks Together

How the Greeks interact in a real position you actually hold.
LearnIntermediate

Keystone · Understanding Market Volatility

VIX, gamma, skew, and the signals beneath them.
1 articleView all →
Cluster

Gamma Exposure (GEX), Explained Simply

What GEX measures, why it matters, and how to read it without the jargon.
LearnToolIntermediate

Keystone · Gamma Exposure: Complete Guide

The deepest treatment of GEX anywhere on the web.
1 articleView all →
Cluster C2

Introducing Gamma Exposure (GEX)

The on-ramp to dealer gamma: what it is and why positioning drives price.
LearnToolIntermediate

Options Flow Series

Reading what institutional traders are doing in real time.
2 articlesView all →
series

How to Read Options Flow: A Beginner's Guide

A practical walkthrough of the feed — sweeps, blocks, and what each row means.
LearnBeginner
series

What Is Unusual Options Activity, and How Do You Spot It?

Separating genuine signal from the everyday noise in the options tape.
LearnToolIntermediate