Book Image

Python for Finance - Second Edition

By : Yuxing Yan
5 (1)
Book Image

Python for Finance - Second Edition

5 (1)
By: Yuxing Yan

Overview of this book

This book uses Python as its computational tool. Since Python is free, any school or organization can download and use it. This book is organized according to various finance subjects. In other words, the first edition focuses more on Python, while the second edition is truly trying to apply Python to finance. The book starts by explaining topics exclusively related to Python. Then we deal with critical parts of Python, explaining concepts such as time value of money stock and bond evaluations, capital asset pricing model, multi-factor models, time series analysis, portfolio theory, options and futures. This book will help us to learn or review the basics of quantitative finance and apply Python to solve various problems, such as estimating IBM’s market risk, running a Fama-French 3-factor, 5-factor, or Fama-French-Carhart 4 factor model, estimating the VaR of a 5-stock portfolio, estimating the optimal portfolio, and constructing the efficient frontier for a 20-stock portfolio with real-world stock, and with Monte Carlo Simulation. Later, we will also learn how to replicate the famous Black-Scholes-Merton option model and how to price exotic options such as the average price call option.
Table of Contents (23 chapters)
Python for Finance Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Chapter 6. Capital Asset Pricing Model

Capital Asset Pricing Model (CAPM) is probably the most widely used model in assets pricing. There are several reasons behind its popularity. First, it is quite simple since it is a one-factor linear model. Second, it is quite easy to implement this one-factor model. Any interested reader could download historical price data for a listed company and market index data to calculate return first, and then estimate the market risk for the stock. Third, this simplest one-factor asset pricing model could be served as the first model for other more advanced ones, such as Fama-French 3-factor, Fama-French-Carhart 4-factor, and Fama-French 5-factor models introduced in the next chapter (Chapter 7, Multifactor Models and Performance Measures). In this chapter, the following topics will be covered:

  • Introduction to CAPM

  • How to download data from Yahoo Finance

  • Rolling beta

  • Several Python programs to estimate beta for multiple stocks

  • Adjusted beta and portfolio beta...