The first batch of U.S. spot ether exchange-traded funds crossed $360 million in trading volume in their first 90 minutes of trading, according to Bloomberg data. Grayscale Investments, BlackRock and Bitwise Asset Management are the winners so far. + The Grayscale Ethereum Trust, which launched with over $9 billion in assets after converting into an ETF, led the pack with about $148 million in trading volume.