AIBD is trading 4.05% lower at $45.63, with renewed AI-stock enthusiasm weighing on its inverse exposure. - The ETF seeks twice the inverse of daily moves in a U.S. AI and big-data index. - Anthropic’s IPO filing has revived enthusiasm for AI stocks, and market coverage links it to stronger technology sentiment. - No AIBD-specific announcement or verified fund-level catalyst was found; intraday volume data was unavailable.