Investment Portfolios: Redesigning for the Data Terrain - From Market Risk to System Continuity

What if the biggest risk in your portfolio is not market volatility—but the system it depends on? For decades, investment portfolios have been designed for a world driven by price discovery, credit creation, and periodic crises. That world is changing. In Investment Portfolios: Reframing the Risk for the Data Terrain, David Rajan presents a fundamental shift in how portfolios must be constructed, evaluated, and stress tested in the emerging Data Terrain—where continuity, system resilience, and data-driven coordination redefine the rules of investing. Drawing from the Economic Theory of Humanity (ETH), this book introduces a new framework for investors: Why traditional diversification breaks under system-level stress How value creation is moving from assets to coordinated systems What “continuity risk” means—and why it is replacing market risk How to redesign portfolios using layered value and system positioning Why stress testing must evolve from crisis scenarios to continuity failure This is not a book about predicting markets. It is a book about understanding the system that markets now operate within. Written for CIOs, institutional investors, asset allocators, and serious practitioners, this work provides both a conceptual framework and a practical lens to rethink portfolios in a world where disruption is structural—not cyclical. The question is no longer how to survive the next crisis. The question is whether your portfolio is built for a system that may not fail—but may simply evolve beyond it.