Ethereum (CRYPTO: ETH) and Bitcoin (CRYPTO: BTC) just picked up yet another reason that makes them worth a small investment of $1,000, even if you already hold some of each. The Securities and Exchange Commission (SEC) on Jan. 30 approved the initial part of an application by Bitwise Asset Management to issue a combined Bitcoin and Ethereum exchange-traded fund (ETF), according to Bloomberg. Upon the announcement, the existing set of ETFs that hold either Bitcoin or Ethereum saw inflows of roughly $655 million in new cash, suggesting that there are institutional investors who see the combined ETF as a possibility that could send prices of both assets higher.