How much has the equity risk premium risen as oil prices surged?
Core argument: The implied equity risk premium for the S&P 500 rose only from 4.37% at the start of March to 4.51% by March 13, which Damodaran reads as a market not behaving as if in crisis mode despite falling stocks and oil above $100 per barrel.
[I estimate] forward-looking equity risk premiums by backing out from stock prices and expected cash flows, the expected return (internal rate of returns) that markets were pricing into stocks. My conclusion, at the start of 2026, was that while stocks were richly priced using almost every conventional metric (high PE ratios, low dividend yields), the implied equity risk premium was in line with what US stocks have generated over the last 65 years []. Two weeks ago, bombs started falling in the Middle East, and US equities and bonds have been struggling to price in the effects of higher oil prices. In keeping with my practice of estimating equity risk daily, during troubled times, I did compute the implied ERP for the S&P 500 every day, during the last two weeks (Feb 27- March 13) [see above]. Oil is up to over $100 per barrel and the S&P 500 is down, but so far, the market is not behaving as if it is in crisis mode. The equity risk premium, which started March at 4.37% has risen, but only to 4.51%, over the two weeks. In fact, it is the ten-year US treasury bond that has had the bigger surge, up from 3.97% at close of trading, on February 27, to 4.28% at close of trading, on March 13, indicating inflation fears are trumping other market concerns right now.

