The VIX1D Changed Everything for 0-DTE Traders

The 30-day VIX was never built for trades that expire in 6 hours.

The VIX1D measures expected volatility from 0-to-1-DTE SPX options, giving you a real-time read on today's session instead of a monthly average.

If you're trading 0-DTE and not checking this number every morning, you just might be sizing strikes blind.