According to a research report released by Bernstein on Monday, the recent surge in Bitcoin (BTC) has been driven by the introduction of exchange-traded funds (ETFs), and now it may be time to focus on Ethereum (ETH). The report suggests that Ethereum "may be the only other digital asset spot ETF approved by the US Securities and Exchange Commission (SEC)". Bernstein predicts that the probability of an Ethereum spot ETF being approved before May is about 50%, with approval within the next 12 months almost certain. Companies such as Franklin Templeton, Blackrock (BRK), and Fidelity Investments, which have already received approval for Bitcoin ETFs, have submitted applications for Ethereum ETFs. The report also notes that Ethereum's next upgrade, the Dencun plan, is scheduled for March and will reduce transaction costs by 50% to 90%.