'Choke Point'—Bitcoin's $77B Coinbase ETF Warning Shocks Markets

Bitcoin investors are suddenly confronting an uncomfortable math problem inside the $91.7 billion U.S. spot bitcoin ETF market. "Coinbase Custody holds 84% of all US spot Bitcoin ETF assets," Marc Baumann, founder of research firm fiftyonexyz, posted on X on April 14. "That's $77 billion with a …