Markets Echo 2006 Risks Amid Rising Leverage, Narrow Risk Views
Two decades ago, an investment bank introduced a financial innovation called the Constant Proportion Debt Obligation (CPDO). It offered AAA-rated security with returns exceeding cash rates. It is 20 years ago this month that I sat in a pitch and listened to an investment bank describe their latest stroke of genius, a product that seemed to offer something for nothing.
The structure increased leverage as credit markets weakened. Investors bought in, assuming stable conditions would persist. Credit spreads had been steady, liquidity was high, and models predicted extreme market moves were nearly impossible. This confidence was built on years of benign market conditions, narrowing the range of risks considered plausible and embedding those assumptions into the models themselves.
History Repeats Itself
Today’s market resembles 2006. Liquidity remains high, credit spreads are tight, and leverage is rising. Investors seek returns in a low-yield environment, tempted to assume the past predicts the future. Source: Bloomberg, ICE BoA Indices, 31 July 2026. Investment Grade: Yield components – 5 year treasuries and credit spread (%). That same mindset sat at the heart of the CPDO story, where the focus on visible returns overshadowed the hidden, nonlinear risks that emerge under stress.
This mindset fueled the CPDO’s appeal. Investors didn’t ignore risk; they narrowed their view of it. Models assigned tiny probabilities to severe spread widening, not because it was impossible, but because it seemed too unlikely to matter. To quote a blog my colleague published in 2025, while investors may recognize the risk correctly, no cognitive failure, but acting on that view can be commercially painful.
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The Cost of Narrow Thinking
When spreads widened, the CPDO’s flaws became clear. A product reliant on stable spreads was built on assumptions that ruled out significant widening. One CPDO, rated AAA in March 2007, defaulted by November, illustrating the catastrophic consequences of underestimating risk. These failures led to significant investor losses, highlighting the danger of relying on models that exclude inconvenient possibilities.
The Pain of Acting on Risk
Today, leveraged ETFs and single-stock ETFs reflect the same instinct: using innovation and leverage to boost returns in a low-yield environment. While the financial system is stronger since 2008, with better-capitalized banks and cleaner balance sheets, vulnerabilities persist. Investors often focus on the transmission mechanisms they fixed while overlooking the ones they did not, such as the interconnectedness of investor behavior.
The Hidden Transmission of Risk
Risk spreads not through direct links between securities, but through investors. When a leveraged investment falls, investors sell what they can, not what has already collapsed. Assets not yet affected become sources of liquidity, spreading distress. This behavior amplifies market vulnerabilities, particularly when confidence is highest and risks seem minimal.
