Bloomberg ETF analyst Eric Balchunas said the probability of approval for altcoin ETFs, particularly the Solana ETF, is now 100 percent. As is known, the US Securities and Exchange Commission (SEC) made a significant move yesterday paving the way for altcoin ETFs, requesting spot ETF issuers for Litecoin (LTC), Ripple (XRP), Solana (SOL), Cardano (ADA), and Dogecoin (DOGE) to withdraw their existing 19b-4 filings.