$USDC
The measures are likely to increase the attention and accessibility of altcoins among traditional investors. Nasdaq, as a well-known trading platform, proposes to include XRP, SOL, ADA, and XLM in its cryptocurrency benchmark index, indicating that these altcoins are advancing into the mainstream financial sector and can attract more traditional investors' interest. If approved by the U.S. Securities and Exchange Commission, the Hashdex ETF could invest in these coins, further increasing their liquidity and market depth, lowering investment thresholds, and enhancing accessibility. For portfolio strategies, if approved, it may be considered to appropriately allocate these altcoins for diversified returns, but attention should be paid to their high volatility and regulatory uncertainties.