ETFs cover major altcoins like Solana, XRP, Litecoin, and memecoins such as Dogecoin October could bring a wave of new crypto exchange-traded funds (ETFs) as the U.S. SEC prepares to make final decisions on 16 proposals. These ETFs cover a mix of major altcoins like Solana, XRP, and Litecoin, as well as popular memecoins such as Dogecoin.