How does ISM Manufacturing PMI affect Iron Condor wing width?
VixShield Answer
ISM Manufacturing PMI directly influences SPX iron condor wing width through its impact on implied volatility and expected daily move. A hot PMI reading (well above 50) typically spikes VIX 1-3 points as it raises inflation and rate concerns, forcing wider wings to maintain the same probability of profit. A weak PMI (below 47) usually compresses VIX, allowing narrower wings for higher credit.
Under the ALVH methodology, adjust wing width dynamically based on the VIX level the morning after the PMI release:
- VIX below 15: Use 8-10 point wings on the SPX (0.40-0.50% of spot). - VIX 15-20: Expand to 12-15 point wings. - VIX above 20: Move to 20+ point wings or switch to defined-risk verticals.
The rule is simple. Measure the expected move for the next 5-7 days after the release. Set short strikes outside 1.5 times that move and choose wings that keep your short strike at roughly 16 delta. This keeps your iron condors balanced between credit received and risk exposure as market conditions shift with the PMI data. Always re-evaluate wing width the morning after each release rather than using fixed widths.
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