On October 23, it was reported that Ken Griffin, founder and CEO of Citadel, submitted documents to the U.S. Securities and Exchange Commission (SEC), disclosing his personal holding of a 4.5% stake in digital asset vault company DeFi Development Corp. (DFDV), approximately 1.3 million common shares, valued at about $600 million. DFDV mainly focuses on Solana (SOL) asset reserves and is currently the second largest Solana vault company. In addition, Citadel Advisors LLC and its affiliated entities also hold about 800,000 shares of DFDV, accounting for 2.7% of the company. This disclosure makes Citadel one of the major institutional investors in DFDV and marks a further step for this traditional financial giant into the digital asset sector. According to the documents, DFDV purchased SOL worth a total of $117 million within 8 days at the beginning of this month, and currently holds about 2.19 million SOL, with a market value of approximately $400 million. Analysts believe that Griffin's move reflects that institutional investors are now viewing crypto vaults as a new asset class, although their valuation is still significantly affected by crypto market volatility.