How does Bitcoin falls as traders cut risk ahead of FOMC: Will TradFi, spot ETF volumes bolster $70K support? affect Iron Condor wing width?

Bitcoin’s risk-off move ahead of FOMC typically lifts VIX 1–3 points as equity implied volatility rises in tandem. For SPX iron condors this directly widens the wings you should use.

When VIX is climbing into the FOMC (especially above 16), tighten your wing width from the normal 1.5–2% of spot to 1.0–1.25%. Narrower wings reduce vega exposure and keep the short strikes inside the higher-probability range that elevated volatility creates. Wider wings become too expensive in relative terms and collect too little credit for the added tail risk.

Under the ALVH methodology, check the VIX term-structure slope first. If front-month VIX futures are in backwardation or the VVIX is spiking, default to the tighter wing set (roughly 40–50 delta on the shorts). Only after the FOMC statement and Powell press conference has passed and VIX starts to roll over should you consider stepping back out to 1.5–2% wings again.

Spot-Bitcoin ETF flows and TradFi buying near $70K are secondary; they matter only if they visibly calm equity implieds. Until VIX actually drops, stay disciplined with narrower wings, higher credit-to-wing ratios, and shorter 0–7 DTE expirations. This keeps the iron condor inside the realized move and protects margin during the event.