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The CPI print is the monthly Consumer Price Index release by the Bureau of Labor Statistics, typically at 8:30 AM ET. Since 2022, CPI has become one of the most significant volatility catalysts, routinely producing 1-3% daily moves in the S&P 500.
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Key takeawayCPI releases create a tradeable IV crush pattern similar to earnings. Selling SPX strangles that expire the same week as CPI captures inflated weekly premium, but keep positions small since CPI surprises can produce outsized moves.
💡 Why It Matters
CPI prints have become the most market-moving macro releases since 2022, producing SPX moves of 1-3% on average. The options market prices an observable CPI premium into weekly expirations, creating a repeatable IV crush opportunity.
⚙ How It Works
CPI is released at 8:30 AM ET on the second or third Tuesday/Wednesday of each month. The market focuses on core CPI (excluding food and energy) and month-over-month changes. Even 0.1% deviations from consensus produce significant equity and bond market reactions.
📋 Example
CPI week: SPX weekly options (Friday expiry) trade at 20% IV versus 15% for the same tenor on non-CPI weeks. A premium seller sells a weekly SPX iron condor Wednesday at 3:00 PM for $4.80, targeting Thursday morning's CPI release. Core CPI prints at consensus, IV drops to 14%, and the iron condor decays to $1.20 by Friday's open.
⚠ Common Mistakes
Traders hold CPI-week premium through the report without reducing size. A CPI surprise of 0.2% versus consensus can produce a 2-3% SPX move, breaching standard iron condor wings. Use half your normal position size for CPI-week trades to account for the binary nature of the event.
❓ FAQ
What is CPI Print?
The CPI print is the monthly Consumer Price Index release by the Bureau of Labor Statistics, typically at 8:30 AM ET. Since 2022, CPI has become one of the most significant volatility catalysts, routinely producing 1-3% daily moves in the S&P 500.
Why does CPI Print matter for premium sellers?
CPI releases create a tradeable IV crush pattern similar to earnings. Selling SPX strangles that expire the same week as CPI captures inflated weekly premium, but keep positions small since CPI surprises can produce outsized moves.
How does CPI Print work?
CPI is released at 8:30 AM ET on the second or third Tuesday/Wednesday of each month. The market focuses on core CPI (excluding food and energy) and month-over-month changes. Even 0.1% deviations from consensus produce significant equity and bond market reactions.
What are common mistakes with CPI Print?
Traders hold CPI-week premium through the report without reducing size. A CPI surprise of 0.2% versus consensus can produce a 2-3% SPX move, breaching standard iron condor wings. Use half your normal position size for CPI-week trades to account for the binary nature of the event.
Related Terms
Close-to-Close Volatility
A basic volatility estimator using only daily closing prices.
Corridor Variance Swap
A corridor variance swap pays realized variance only when the underlying trades within a specified price range (corridor).
Dispersion Trading
Dispersion trading exploits the persistent premium of index implied volatility over the weighted average of its component implied volatilities.
Earnings Calendar
An earnings calendar lists the scheduled dates and times (before open or after close) when public companies report quarterly financial results.
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