According to the 13F report submitted by each hedge fund, each hedge fund holds a total of $4.70 billion worth of spot bitcoin ETFs: 1. Jane Street increased its holdings of IBIT worth $221 million for the first time in Q2 and reduced its holdings of GBTC by 86%; 2, European asset management company Capula holds nearly $500 million spot bitcoin ETF; 3. Ken Griffin's Citadel holdings in the ProShares Bitcoin Strategy ETF tripled from Quarter 1 to Q2 to 860,727 shares, currently worth $19 million, and also holds a $67 million call and a $52 million put on the fund. Citadel also holds a smaller position in its remaining BTC ETF, worth less than $10 million.