Academic finance offers a clean theoretical map, but the terrain of live markets is messy, expensive, and unforgiving. Modern Factor Investing is designed for the practitioner who needs to bridge the chasm between paper alpha and realized returns. It is specifically written for quantitative analysts, portfolio managers, and sophisticated allocators who understand the basics of asset pricing but require a rigorous framework for applying factor theory under real-world constraints. By stripping away academic assumptions, this book equips investors to build strategies that can survive the friction of live trading.

This comprehensive guide takes you through the entire quantitative lifecycle, from sanitizing raw data to executing trades. You will go beyond standard definitions to explore the structural drivers and implementation nuances of core equity factors like Value, Momentum, and Quality. The text provides actionable methodologies for signal construction, multi-factor portfolio optimization, and risk budgeting, ensuring that your models are not just statistically significant, but economically robust. Crucially, it addresses the interaction between portfolio design and market reality, offering detailed strategies for managing transaction costs, turnover, and liquidity limits.

Distinguishing itself from purely theoretical works, this book places heavy emphasis on the operational details that determine long-term success: data hygiene, implementation shortfall, and product governance. Readers will learn to stress-test portfolios against tail events, manage the risks of crowdin