The Risk of Trading: Mastering the Most Important Element in Financial Speculation

by Michael Toma, CRM

Overview

Published in 2012 by John Wiley & Sons in the Wiley Trading series, this book by Michael Toma (Certified Risk Manager) argues that risk management is the single most important element in successful financial speculation. The book provides a comprehensive framework that integrates mathematical risk management with the psychological aspects of handling uncertainty.

Core Thesis

Toma argues that most traders focus disproportionately on finding profitable strategies while neglecting the risk management that determines whether those strategies produce actual wealth. The best trading system is useless without proper position sizing, stop placement, and portfolio-level risk controls.

Key Topics

• Defining Risk: Distinguishing between uncertainty (unmeasurable) and risk (measurable), and understanding which types of financial risk can be managed.
• Position Sizing: Mathematical approaches to determining how much capital to allocate to each trade based on account size, risk tolerance, and trade probability.
• Risk-Reward Analysis: How to evaluate whether a trade's potential reward justifies its risk, and how to maintain positive expectancy over large samples.
• Psychological Risk: How cognitive biases, emotional reactions, and stress affect risk decisions. The book integrates behavioral finance insights with practical risk management.
• Portfolio Risk: Managing correlation, concentration, and drawdown risk across a portfolio of positions.
• Personal Risk System: Building a customized risk management framework that reflects individual financial circumstances, psychological profile, and trading style.