BTCUSD : Playing with DvolBTCUSD/DVOLCOINBASE:BTCUSD/DERIBIT:DVOLi_am_siew'Price' here can never go below nil. There is only so much DVOL can go. Over the years, volatility has begun to trend lower. It now sits within a comfortable range. But price can swing much wider. $20k move in a week is still probable. Which is why this chart can make things easier. Good luck.