Quantum Solutions, a Japan-listed company (Ethereum) backed by Ark Invest founder Cathie Wood, officially disclosed that after purchasing 187.53 ETH, the company now holds a total of 5,418.32 ETH, with an average purchase price of $3,943.with a total purchase cost of $20.58 million. Its ETH holdings rank 15th among listed Ethereum treasury companies. Additionally, the company holds 11.6 BTC.