US hedge fund Brevan Howard has disclosed holding $2.3 billion worth of Bitcoin ETF shares in a recent filing with the US Securities and Exchange Commission (SEC). This significant investment positions Brevan Howard as a major player in the Bitcoin ETF market. According to Bitcoin Archive, Brevan Howard is now the largest holder of BlackRock's Bitcoin spot ETF (IBIT), indicating a strong institutional interest in this investment vehicle. The substantial allocation reflects a growing acceptance of Bitcoin as a legitimate asset class among institutional investors. This development could further drive demand and price appreciation for Bitcoin in the long term. Other hedge funds are likely watching Brevan Howard's move closely and may consider similar investments in Bitcoin ETFs. ```