Core Insights - Cathie Wood, CEO & CIO of ARK Invest, expresses uncertainty regarding the identity of those behind the IPO "heartbeat trades" affecting her ETFs, ARK Innovation ETF (ARKK) and ARK Fintech Innovation ETF (ARKF) [1] Group 1 - ARK Invest is currently facing unusual trading activities related to its ETFs, which raises questions about market dynamics [1] - The discussion took place during an interview on Bloomberg's "ETF IQ" program, highlighting the significance of these trades in the ETF market [1]