A Bitcoin ETF is an investment vehicle, allowing investors to gain exposure to price movements of Bitcoin without direct ownership of the crypto. This section tracks global developments in Bitcoin ETFs, especially filings, approvals, net flows, and performance of major funds, including BlackRock’s IBIT. Readers can follow landmark milestones, such as the speed‑of‑growth in assets under management, regulatory shifts, and market sentiment fueled by ETF inflows, to understand how institutional adoption through ETFs influences Bitcoin’s mainstream liquidity and investor narrative.