According to the 13F reports submitted by hedge funds, hedge funds hold a total of $4.7 billion worth of spot Bitcoin ETFs: 1. Jane Street first increased its holdings of IBIT worth $221 million in Q2 and reduced its holdings of GBTC by 86%; 2. European asset management company Capula holds nearly $500 million in spot Bitcoin ETFs; 3. Ken Griffin's Citadel's holdings of ProShares Bitcoin Strategy ETFs tripled from the first quarter to the second quarter to 860,727 shares, currently worth $19 million, and also holds $67 million in call options and $52 million in put options for the fund. Citadel also holds smaller positions in its remaining BTC ETFs, worth less than $10 million. (TheBlock)