ChainCatcher news, according to Forbes, securities filing documents show that hedge funds Millennium Management, Capula Management, and Tudor Investment increased their investments in U.S. spot Bitcoin ETFs in the third quarter.Millennium's holdings in iShares Bitcoin Trust more than doubled from the previous quarter to 23.5 million shares, valued at $849 million. It also increased its positions in ARK 21Shares and Bitwise Bitcoin ETFs; London-based macro hedge fund Capula added to its positions in iShares Bitcoin Trust and Fidelity Wise Origin Bitcoin Fund, totaling approximately $600 million; Paul Tudor Jones's hedge fund Tudor significantly increased its investment in iShares Bitcoin Trust, raising its share count fivefold to 4.4 million shares.

ChainCatcher news, according to The Block, based on the 13F reports submitted by various hedge funds, these hedge funds collectively hold $4.7 billion worth of Bitcoin spot ETFs:Jane Street increased its position in IBIT by $221 million for the first time in Q2, while reducing its position in GBTC by 86%;European asset management firm Capula holds nearly $500 million in Bitcoin spot ETFs;Ken Griffin's Citadel increased its holdings in ProShares Bitcoin Strategy ETF shares from the first quarter to the second quarter by twofold, reaching 860,727 shares, currently valued at $19 million, and also holds $67 million in call options and $52 million in put options for the fund. Citadel also holds a smaller position in its remaining BTC ETF, valued at less than $10 million.

ChainCatcher news, according to The Block, Europe's fourth-largest hedge fund Capula Management reports having $464 million in Bitcoin ETF assets. According to the documents, Capula holds shares of the spot Bitcoin ETFs issued by BlackRock and Fidelity.