Recent data shows that Bitcoin ETFs are experiencing significant activity. Hong Kong Spot ETFs hold about 4,200 BTC, with a notable Bitcoin conference hosted in the region. The total inflow into BTC ETFs since mid-January is approximately $11 billion. Various entities, including hedge funds and banks, are disclosing their substantial investments in Bitcoin ETFs, with some holding millions of dollars worth of BTC. Notable inflows and outflows are being reported across different ETFs, with a focus on major financial institutions and their involvement in the crypto market.