BlackRock CEO Larry Fink expressed his delight in the performance of the firm's spot Bitcoin exchange-traded fund (ETF) and reiterated his strong confidence in Bitcoin's long-term viability. Fink highlighted that the iShares Bitcoin Trust (IBIT) has been the fastest-growing ETF in history, surpassing $13.5 billion in flows within 11 weeks. He mentioned that the market now has more liquidity and transparency, with IBIT accumulating $17.1 billion in Bitcoin assets. Additionally, he believes that some ETF issuers might struggle to maintain profitability due to increasing competition and fee constraints, which could lead to potential closures. Hashdex recently became the 11th participant in the competitive spot Bitcoin ETF market in the US.