Master the basics of risk measurement and valuation.
Markets are generally efficient but fail during periods of extreme uncertainty or change.
An investment philosophy is a coherent way of thinking about markets and why they make mistakes. It is broader than a strategy (e.g., "buying low PE stocks" is a strategy, not a philosophy).
Choose a philosophy that aligns with your specific risk aversion, time horizon, portfolio size, and tax status. 3. Key Categories of Investment Philosophies
Aswath Damodaran's framework for is not a single set of rules, but a guide to finding a personal approach based on core beliefs about how markets work. Damodaran, often called the "Dean of Valuation," argues that there is no "best" philosophy, only the one that best fits an individual's psychology, risk tolerance, and time horizon. 1. Definition and Core Principles