Investors Repeat Past Mistakes Amid Market Risks
It has been 20 years since the Constant Proportion Debt Obligation (CPDO) was introduced as a financial innovation, offering a AAA-rated security with a premium over cash. The CPDO increased leverage as credit markets weakened, and investors bought into it due to stable credit spreads, abundant liquidity, and sophisticated models that suggested extreme market moves were unlikely.
Today’s market shares similar characteristics, with plentiful liquidity, tight credit spreads, compressed expected returns, and rising leverage. A new generation of financial innovation is attracting capital, and investors are searching for returns while yields remain relatively compelling.
Lessons from the Past
The CPDO story highlights the problem of investors narrowing the range of risks considered plausible due to years of benign conditions. Severe spread widening was assigned low probabilities, not because it was impossible, but because it was considered unlikely to matter. When spreads eventually widened, reality exposed the difference between unlikely and inconvenient risks.
A CPDO structure focused on the financial sector, launched in March 2007 and rated AAA, defaulted in November of the same year. This catastrophic failure led to significant investor losses, demonstrating the importance of considering all possible risks, not just the likely ones.
Investor Mindset
Investors often frame their approach incorrectly, focusing on how to increase returns to an acceptable level rather than whether the likely return is sufficient compensation for the risks. This difference is significant, as returns are visible and enticing, while risks are often hidden and nonlinear, revealed only under stress.
A blog published in 2025 noted that investors may recognize risks correctly but acting on that view can be commercially painful. This contributes to expensive markets remaining expensive for longer than they should, eventually repricing with extreme volatility.
Risk Transmission
The financial system is stronger than it was in 2008, with better-capitalized banks and cleaner balance sheets. However, investors often focus on the transmission mechanisms that were fixed and overlook the ones that were not. Risk is ultimately transmitted through the owners of that risk, and when a leveraged investment falls in value, investors sell what they can, not the asset that has already collapsed.
Assets that have not yet fallen become sources of liquidity, and distress spreads not because securities are directly linked, but because investors are. The CPDO experience reminds us that markets are often most vulnerable when confidence is highest, and risk can appear smaller than it really is. Markets are often most vulnerable when confidence is highest.
Investors should spend less time asking what might cause credit spreads to widen and more time accepting that they can. From today’s historically tight valuations, is that really a risk worth betting against?
