Polymarket users are predicting an 87% chance that a spot Solana ETF will be approved in 2025, according to recent updates. This prediction comes amidst a backdrop of increasing interest in cryptocurrency ETFs, with an upstart ETF firm debuting the first-ever funds tracking futures in Solana, the sixth-largest cryptocurrency. In a related development, the likelihood of an XRP ETF approval has also surged to 87% on Polymarket following the latest update in the Ripple-SEC case, where the SEC has reportedly dropped its appeal against Ripple. This has led to a significant increase in XRP trading volume, up 253% to $10.64 billion. The expansion of Polymarket into Solana, allowing users to deposit funds via the Solana blockchain, reflects the growing traction of prediction markets. Since September, daily unique active wallets on Polymarket have increased by 550%, from 6,000 to 39,000. Additionally, the chance of Solana ETF approval has risen to 88% on Polymarket, signaling strong market confidence.