Premium for Uncertainty: The FOMC Puzzle Explained

It’s not volatility, but the anticipation of risk that drives returns. This paper shows how timing macro events reveals the hidden premium of uncertainty.

Key Performance Metrics

📊 How Well Does This Strategy/Model Perform?

  • Pre-FOMC Return: 27.1 bps average per event
  • Annualized Return from FOMC Days (1995–2017): 2.24%
  • Contribution: ~25% of total annual equity return from ~8 days/year

💡 Takeaway:
A small number of days tied to scheduled macro events explain a large portion of annual equity returns—driven by the resolution of uncertainty.


Key Idea: What Is This Paper About?

The paper solves the “FOMC puzzle”: why does the stock market drift upward before Fed announcements without increased volatility? The answer: investors demand a premium for “heightened uncertainty,” which is slowly resolved as the announcement approaches. The result is outsized returns on those days.


Economic Rationale: Why Should This Work?

📌 Relevant Economic Theories and Justifications:

  • Risk-Return Trade-off, Recast: Uncertainty—not volatility—is priced. Conventional risk measures like VIX or realized volatility fail to capture anticipation risk.
  • Information Arrival & Risk Premia: Scheduled macro news triggers uncertainty; the resolution of that uncertainty commands a return.
  • Behavioral Finance: Market participants delay action until uncertainty fades, causing predictable drift as announcements near.

📌 Why It Matters:
The findings reframe how we think about risk in macro-sensitive markets and show that standard risk metrics miss critical dimensions of anticipated uncertainty.


How to Do It: Data, Model, and Strategy Implementation

Data Used

  • Instruments: S&P 500 index and futures, VIX index
  • Period: 1986–2018
  • Macro Events Tracked: FOMC, Nonfarm Payrolls, GDP, ISM, and unexpected VIX spikes

Model / Methodology

  • Event study of pre-announcement windows (4 PM day-before to 5 minutes pre-release)
  • Regression of returns on lagged VIX and changes in VIX
  • Compare pre-event returns on macro days vs. non-event days
  • Use VIX spikes as an out-of-sample test for "heightened uncertainty"

Trading Strategy (Constructed from Insights)

  • Signal Generation:
    • Long S&P 500 futures from 4 PM before FOMC, GDP, NFP, ISM announcements
    • Also go long after large VIX spike days (>3% increase in VIX)
  • Execution:
    • Hold until just before the announcement or close the next day (for VIX spike days)
  • Risk Management:
    • Trade small size—these are rare, high-conviction trades (~8 per year)
    • Avoid trading during overlapping macro news releases or conflicting signals

Key Table or Figure from the Paper

📌 Explanation:

  • Shows that only 8 days per year (FOMC + HVIX days) deliver over 30% of the annual return.
  • HVIX (Heightened VIX) days deliver even more return than FOMC days.
  • Highlights clustering of return premiums around macro news—suggesting time-varying, event-specific risk premia.

Final Thought

💡 It’s not volatility, but the anticipation of risk that drives returns. This paper shows how timing macro events reveals the hidden premium of uncertainty. 🚀


Paper Details (For Further Reading)

  • Title: Premium for Heightened Uncertainty: Solving the FOMC Puzzle
  • Authors: Grace Xing Hu, Jun Pan, Jiang Wang, Haoxiang Zhu
  • Publication Year: 2018
  • Journal/Source: SSRN Electronic Journal
  • Link: https://doi.org/10.2139/ssrn.3282195

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