[Ken Griffin, Founder of Citadel, Holds 4.5% Stake in Solana Vault Company] Ken Griffin, founder and CEO of Citadel, submitted documents to the SEC, disclosing his personal ownership of a 4.5% stake in the digital asset vault company DeFi Development Corp. (DFDV), approximately 1.3 million common shares valued at around $600 million. DFDV focuses on Solana asset reserves and is currently the second-largest Solana vault company. Additionally, Citadel and its affiliated entities hold approximately 800,000 shares of DFDV, accounting for 2.7% of the company. Earlier this month, DFDV purchased $117 million worth of SOL and currently holds approximately 2.19 million SOL tokens, with a market value of about $400 million. This move indicates that traditional financial giants are accelerating their expansion into the digital asset sector.