A new memory-themed exchange-traded fund (ETF) has been launched by Roundhill Investments, which has attracted significant attention and investment. The fund has reportedly drawn in a substantial amount of money in a short period of time, with some outlets suggesting it has already doubled in value, although its holdings are also being questioned as potentially overvalued. The ETF's launch and rapid growth may contribute to market volatility, particularly in relation to memory stocks such as those related to DRAM.