币界网报道：According to a report from Coinnet on June 18, digital asset brokerage and research company K33 said that under the supervision of the U.S. Securities and Exchange Commission (SEC), which is more inclined towards cryptocurrencies, new spot altcoin ETFs may be launched in the coming months, and relevant approvals may give rise to attractive long-short strategies. At present, eight issuers have submitted applications for spot Solana (SOL) ETFs, and the SEC also requires them to add pledge content when updating their applications, which may mean that pledge will become a component of Ethereum and Solana ETFs. In addition, there are ETF applications for crypto assets such as LTC, XRP and DOGE. K33 analyst Lunde pointed out that unlike the "Grayscale effect" when the early Bitcoin and Ethereum ETFs were launched, the Grayscale Solana Trust has never traded at a discount and has low holding risk; while the Litecoin Trust often trades at a discount, and only two issuers have applied for its ETF, which may face the risk of capital outflow after its launch. Therefore, Lunde believes that after the launch of the ETF, the trading strategy of going long on Solana and shorting on Litecoin is quite attractive, especially if the two are listed at the same time.