Unusual total active option classes on open include: Avantor (AVTR), Blackstone (BX), iShares Goldman Sachs Software Index Fund (IGV), ASML (ASML), Core Scientific, Inc (CORZ), TeraWulf (WULF), Zscaler (ZS), iShares MSCI India (INDA), iShares 20 Year Treasury Bond ETF (TLT), and Chevron (CVX).