#AltcoinETFsPostponed refers to recent developments where the approval or launch of exchange-traded funds (ETFs) based on altcoins—cryptocurrencies other than Bitcoin—has been delayed by regulatory bodies, particularly the U.S. Securities and Exchange Commission (SEC). While Bitcoin ETFs have seen progress and even approval, the SEC has taken a more cautious approach toward altcoin-based ETFs due to concerns over market manipulation, liquidity, and investor protection.