Unusually active option classes on open September 20th

Unusual total active option classes on open include: Vanguard Total Bond (BND), Nasdaq 100 Micro Index (.XND), ALTC Acquisition Corp (OKLO), Nike (NKE), Nuscale Power Corp (SMR), Vistra Energy (VST), Caesars (CZR), Cameco (CCJ), Viking Therapeutics (VKTX), and Global X Uranium (URA).