Quantum Solutions, ARK-backed firm, Becomes Japan’s Largest ETH Holder
- Quantum Solutions, supported by ARK Invest, leads Japan’s Ether DAT with 3,865.84 ETH.
- The firm targets a 100,000 ETH treasury, funded by a $180M institutional investment.
- Quantum’s shares fell 28% despite the buy, indicating cooling DAT market sentiment.
Tokyo-listed Quantum Solutions has become the largest Ethereum digital asset treasury (DAT) company outside the United States after acquiring 2,365 ETH in just seven days. ARK Invest founder and CEO Cathie Wood confirmed ARK’s ties with the firm by calling the buy a key milestone in the global DAT expansion.
Fast Accumulation and Treasury Expansion
According to Quantum Solutions founder Francis B. Zhou, the company’s Ethereum accumulation reached 3,865.84 ETH, valued at about $14.8 million at current prices. Zhou said through an X post that the firm aims to continue building its holdings, noting that the company’s Hong Kong subsidiary, GPT Pals Studio Limited, executed the recent purchases on October 21.
The acquisition, averaging $4,101 per ETH, was funded through external borrowings and proceeds from the company’s 13th and 14th Series Stock Acquisition Rights, as well as Unsecured Convertible Bonds with Stock Acquisition Rights. These measures are part of Quantum’s broader plan to deepen its exposure to blockchain and digital assets, according to the company’s official filing.
Notably, Quantum Solutions is purchasing Ethereum at an approximate daily rate of 150 million yen (about $983,000). The firm has also indicated its intent to accumulate up to 100,000 ETH, supported by a 26 billion yen (approximately $180 million) fundraising completed in September 2025.
Institutional Support from ARK Invest and SIG
The recent funding round was led by major institutional backers, including ARK Invest, Susquehanna International Group (SIG) through CVI Investments, and Integrated Asset Management. The capital injection marked ARK Invest’s first direct entry into Asia’s public markets.
Cathie Wood commented, “Three months into the DAT revolution, we’re happy to support Japan’s first institutional-grade ETH DAT.” Her remarks showed ARK’s ongoing interest in Ethereum-based projects, which have also included investments in BitMine, chaired by Tom Lee, the world’s largest Ether treasury company.
Following the expansion, Quantum Solutions is the 11th largest global ETH DAT and the top-ranked in Japan. This comes months after Quantum’s earlier decision to build a Bitcoin treasury, where it currently holds 11.6 BTC, valued at around $1.3 million.
The company’s emphasis on Ethereum marks a shift among some publicly listed firms adopting crypto assets. However, the company noted that the immediate financial impact on its fiscal results for the year ending February 2026 will be minor.
Related: Ethereum Unveils ERC-8004, EIP-2 to Power AI Agent Future
Market Reaction and Broader DAT Sector
Despite the milestone, Quantum shares have now fallen over 28% in the past five days, suggesting broader market cooling among DAT-related equities. Other publicly traded crypto treasury companies have also seen share value contractions in recent sessions, with analysts attributing the pullback to profit-taking and short-term volatility concerns.
In contrast to markets such as Hong Kong, India, and Australia, where regulatory conditions for listed crypto treasuries have tightened, Japan is relatively supportive. The country’s regulatory structure, treating digital assets as financial instruments, has allowed transparency in treasury disclosures and filings, according to Quantum’s recent statements.
This favorable environment has encouraged institutional participation, particularly from firms exploring blockchain-based reserves. The public status of Quantum Solutions also ensures that its asset acquisitions are visible to investors and regulators, maintaining accountability in a sector still developing globally.
Quantum’s Hong Kong subsidiary continues to manage its crypto operations, emphasizing Ethereum as the core of its digital asset strategy. The company stated the group will continue to pursue a strategic accumulation of digital assets, focusing primarily on Ethereum, to expand our asset portfolio and enhance corporate value.
As the digital asset treasury trend sees slower momentum worldwide, Quantum Solutions’ steady accumulation and ARK Invest’s participation support the company’s position in Japan’s growing crypto market.
Meanwhile, Quantum Solutions’ rising Ether reserves, institutional backing, and steady funding indicate the fast integration of digital assets into corporate finance. The company’s continued expansion shows Japan’s supportive stance toward publicly traded digital asset treasuries, positioning Quantum Solutions as key in Asia’s Ethereum accumulation trend.
