Two spot ETFs for the Sui blockchain launched with very low trading volumes, highlighting significant liquidity challenges for lower-ranked altcoins compared to top-tier assets like Solana and XRP. Despite identical regulatory approval and infrastructure, lower market cap ranks correspond with a sharp decline in secondary market activity and investor demand. This trend suggests a concentrated market structure where only a few altcoin ETFs achieve meaningful liquidity and institutional adoption, while others struggle to attract volume and sustain themselves.