Unusual total active option classes on open include: Star Bulk Carriers (SBLK), Petrobras (PBR), Edwards Lifesciences (EW), Gap Inc (GAP), NovaDel Pharma (NVDL), Pinduoduo (PDD), Vertiv Holdings (VRT), 2X LONG VIX FUTURES ETF (UVIX), Super Micro (SMCI), and Apple (AAPL).