Quantitative finance is the study of financial markets and securities by using mathematical models and very huge datasets. It draws concepts from mathematics, finance, statistics, and programming. Quantitative finance allows for the creation of financial models that can be utilized for pricing a variety of financial assets such as financial derivatives products. Quantitative economics is an area of study that involves the application of tools from computer science and mathematical sciences such as stochastic models, algorithms, statistics, numerical analysis, possibility theory, and optimization theory, for effectively modeling different economic situations. It involves the study of the use of resources for the manufacture, supply and consumption of goods and services. The study of quantitative economics focuses on the quantifiable features of financial systems. This book explores all the important aspects of quantitative finance and economics in the present day scenario. It elucidates new techniques and their applications in a multidisciplinary manner. This book will serve as a reference to a broad spectrum of readers.