According to official data, as of March 15th, the number of circulating shares for Bitwise's spot Bitcoin ETF BITB has exceeded 50 million. At the time this article was written, it reached 53.68 million shares, with each share holding 0.000545 BTC. This means that BITB currently holds approximately 29,267.25 BTC, with a market value of about $2,041,012,326.69.