WisdomTree Bitcoin Fund (BTCW) is an exchange-traded fund that provides investors with passive exposure to bitcoin's price by holding physical bitcoin directly in cold storage custody. The Fund operates as a transparent, passively managed investment vehicle that allows retail and institutional investors to gain bitcoin exposure through traditional brokerage accounts, with daily net asset valuations based on an independently calculated spot price reference rate across major bitcoin trading platforms. The Fund generates revenue through an annual sponsor fee of 0.25% of average daily net assets, with the sponsor absorbing most administrative and operational costs including custody, compliance, and exchange fees.