The curriculum says the risk of exogenous shocks is reflected in prices but specific shocks are not. How do I reconcile these statements?

Great question — this distinction is subtle but foundational to understanding risk premiums.

The Key Distinction:

Markets cannot price SPECIFIC future events — no one in 2019 was pricing the COVID-19 pandemic specifically. But markets DO price the general risk that SOMETHING unexpected could happen. This general risk shows up as:

• Equity risk premiums above the risk-free rate
• Credit spreads above government bonds
• Volatility priced into options
• Term premiums in the yield curve

Example — Thornridge Pension 2019-2020:

In late 2019, Thornridge's equity allocation had an implicit expected return incorporating a normal equity risk premium (~5%). This 5% compensated investors for the general possibility of adverse events — recessions, policy shocks, geopolitical flare-ups — across a broad distribution.

When COVID arrived in March 2020:

• The specific event was NOT in anyone's pre-pandemic forecast
• But the 5% risk premium existed partly BECAUSE events like this are possible
• Equity prices fell ~35% as the market repriced to reflect the realized shock
• The risk premium subsequently widened to compensate for continued uncertainty

This is exactly the framework the curriculum describes. The risk of "something like COVID" was always priced. The specific event was not.

Why This Matters for CME:

1. Risk premiums are compensation for surprises you can't specifically predict: You wouldn't need a 5% equity premium if everything was forecastable. The premium exists because of the unknown unknowns.

1. Don't try to forecast specific shocks: Your CME process should incorporate a broad distribution of outcomes, including tail events, rather than trying to predict which specific shock will occur.

1. After a shock occurs, reassess both the new baseline AND the risk premium: A shock reveals information about the true distribution of outcomes, which may warrant a wider risk premium going forward.

1. Low risk premiums are a warning sign: If equity risk premiums are compressed to historically low levels, the market is pricing a narrow distribution of outcomes — which means the next shock will create a larger-than-expected repricing.

The "Unknown Unknowns" Problem:

Risk premiums only compensate for risks the market has considered. Genuinely novel categories of risk — the first pandemic in a century, the first sovereign default of a major economy, the first central bank digital currency — may not be fully priced even through the general risk premium channel. This is why even well-calibrated portfolios can be surprised.

Practice risk premium analysis in our CFA Level III question bank.