What Scares the S&P 500?

Quick Read

  • Equity option market pricing offers a unique way to quantify investor attention across growth, inflation, and policy events.
  • In the second half of 2024 the risk premia associated with inflation releases declined relative to labor market data as the Fed shifted focus toward labor market and away from inflation risk. With elevated S&P 500 Index concentration and the market leadership of the artificial intelligence (AI) theme, some single company earnings (NVIDIA) have been rising risk events for the entire index.
  • In our tactical multi-asset portfolios like the BlackRock Tactical Opportunities Fund, we entered 2025 underweight the S&P 500 versus a diversified set of non-US equity markets. This positioning was informed by pricing and flows insights. We have also added to directional short duration positions in US Treasuries as the market’s relatively benign perception of inflation risk has diverged from our inflation outlook.

Pay attention to macro news

The types of macro events driving markets and dominating financial news and broker reports shift over time. Some periods are dominated by Federal Reserve meeting days, others by Consumer Price Index (CPI) or Non-Farm Payrolls (NFP), or even election days. We can quantify such shifts in attention by using index options data and looking at implied equity index moves.

Trading volumes in single-day S&P 500 options have been growing and, by linking them to macro news release dates, we can better understand shifts in how important the market believes these releases are for the broad equity market. The visual below plots the time series of event risk scores in recent years. As has been the case since the beginning of the monetary hiking cycle in 2022, Fed meeting days were typically the most important macro risk events for equities throughout 2024. This data also reveals an upward shift in relative importance of labor market data starting in the summer of 2024. That’s consistent with market concerns about a rising unemployment rate shifting focus away from the inflation side of the Fed’s dual mandate.

S&P 500 risk

Elections and AI earnings

Another way that we can use daily options data to understand shifts in the relevant equity risk drivers is to simply look at the days with the highest risk scores and then match them to a calendar of macro events. The table below shows the highest implied equity volatility days for 2024 and the associated event. Unsurprisingly, the November election topped the charts and was followed by some of the growth, inflation, and policy days that were plotted in the chart above. This table also highlights an important micro driver of market-level risk in 2024 – three of the top 15 riskiest days for the S&P 500 in 2024 were NVIDIA earnings release days.

Elections AI earnings