Sports betting provides a great way to apply economics and test its predictions.

This website contains the lecture notes for an undergraduate course (ECON30580) on the economics of betting markets that I taught at UCD in Spring 2026.

If you would like to use some of this content in your teaching, send me an email. My book Fine Margins can be used as a supplementary resource for teaching this material.

If you are interested in reading some of the research the book is based on, you can find it here.

1. Introduction

2. The Past and Present of Betting Markets

3. Basics of Betting Markets: Odds, Margins and Probabilities

4. Risk Aversion and Betting Decisions

5. Beliefs, Betting and the Wisdom of Crowds

6. Pari-Mutuel Betting Markets and the Favourite-Longshot Bias

7. The Book Balancing Myth

8. Information and Market Structure

9. Monopoly and Oligopoly

10. Efficiencies and Favourite-Longshot Bias

11. Applications of the Monopoly Model: Draws, Advertising and Inside Information

12. Field Size and Margins Across Markets

13. Betting with a Point Spread

14. Specials and Free Bets

15. In-Play Bets and Cash Out

16. Betting Exchanges and Prediction Markets

17. The Kelly Criterion

18. Impacts of Gambling and Taxation Issues

19. Regulation of Betting Markets


Notes on Topics Not Covered in 2026

Repeated Gambles: The Binomial Theorem and Classic Problems

The Law of Large Numbers and the Central Limit Theorem

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