币界网报道：ProShares has launched the first US-listed Bitcoin-linked ETF that provides leveraged exposure to Bitcoin futures contracts. The ProShares Ultra Bitcoin Strategy ETF (BITU) began trading on the NYSE Arca exchange, offering approximately 2x the daily return of the S&P CME Bitcoin Futures Index. This follows ProShares' successful launch of the first Bitcoin futures ETF (BITO) in 2021. The new leveraged product comes as Bitcoin's price has rebounded over 50% this year, though it remains below its 2021 peak. BITU tracks Bitcoin futures rather than holding actual Bitcoin, and like BITO, it may face tracking error and contango issues. The SEC has approved the leveraged ETF while continuing to delay decisions on spot Bitcoin ETF applications from firms like BlackRock and Fidelity. Analysts note leveraged ETFs are typically used by sophisticated traders for short-term bets rather than long-term holdings.