https://www.derivasys.com/reports/2026-08-01 Derivasys en 2026-08-01T13:36:36+00:00 Front-end BTC volatility edges higher while longer-dated volatility holds steady — 1 August 2026 https://www.derivasys.com/reports/weekly/2026-07-31 Derivasys en 2026-08-01T12:47:33+00:00 BTC weekly surface: 1W ATM IV falls 2.43 volatility points — 31 July 2026 https://www.derivasys.com/reports/2026-07-31 Derivasys en 2026-07-31T22:58:28+00:00 BTC options stay broadly steady as put-side volatility firms — 31 July 2026