aswathdamodaran.blogspot.com · 2021-01-20 · 1961d

Data Update 2 for 2021: The Price of Risk

This article analyzes how to measure the price of risk in financial markets through default spreads in bond markets and implied equity risk premiums in stock markets. The author argues that risk premiums—the extra return investors demand for bearing risk—are dynamic, observable metrics that better reflect market valuation than static measures like the P/E ratio. Using his framework, the author concludes the S&P 500 is overvalued by approximately 12% as of January 1, 2021, with significant downside risk unless economic growth and interest rates follow a Goldilocks scenario.

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Metrics in this report

Equity Risk Premium Standard Error

2.1percent

Range of true ERP from 0.64% to 9.04%, 1928-2020

Expected Return on Stocks

5.65percent

S&P 500 at start of 2021; historically around 8% for most of century

Historical Equity Risk Premium

4.84percent

average

S&P 500, 1928-2020 period

Implied Equity Risk Premium

4.72percent

S&P 500 on January 1, 2021

Implied Equity Risk Premium (Prior Decade)

5.53percent

average

S&P 500, prior decade 2011-2020

Implied Equity Risk Premium Peak

7.75percent

peak

S&P 500 on March 20, 2020 during COVID crisis

Long-term Average Implied Equity Risk Premium

4.21percent

average

Historical long-term comparison baseline

S&P 500 Overvaluation

12percent

Valuation estimate based on author's assumptions on January 1, 2021