Published on September 22, 2025 – In a bold escalation of its Bitcoin-centric treasury policy, Tokyo-listed Metaplanet Inc. (TSE: 3350) has acquired 5,419 BTC for approximately $632.53 million, marking the company’s largest single purchase to date. Announced on September 22, 2025, this move propels Metaplanet’s total holdings to 25,555 BTC, valued at around $2.91 billion at current prices, and vaults it into the ranks of the world’s fifth-largest public corporate Bitcoin holders, surpassing crypto exchange Bullish with its 24,300 BTC stash.

The acquisition, executed at an average price of $116,724 per Bitcoin (or 17,281,012 yen), was primarily funded through the company’s recently closed $1.45 billion international share offering, announced earlier in September. This capital infusion underscores Metaplanet’s aggressive pivot toward Bitcoin as a core reserve asset, a strategy that has delivered a staggering year-to-date “BTC Yield” of 395.1% in 2025—a metric the firm uses to track the growth in Bitcoin per fully diluted share. For the third quarter alone (July 1 to September 22), the yield stands at an impressive 10.3%, reflecting sustained accumulation amid market volatility.

A Rapid Rise in Corporate Bitcoin Adoption

Metaplanet’s journey from a modest hotel-management firm to Asia’s premier Bitcoin treasury powerhouse has been meteoric. Just five months ago, in mid-April 2025, its holdings totaled a mere 4,525 BTC, securing a spot in the global top 10. By early September, it had crossed the 20,000 BTC threshold after adding 136 BTC on September 8 and 1,009 BTC on September 1, overtaking U.S. miner Riot Platforms to claim sixth place overall. The latest tranche represents over 21% of its current portfolio and positions the company at 85.2% of its ambitious year-end target of 30,000 BTC.

This isn’t isolated ambition. Metaplanet, often dubbed “Japan’s MicroStrategy” after Michael Saylor’s trailblazing firm, is part of a global wave of corporate Bitcoin adoption. Collectively, public companies now hold over 1 million BTC, with Strategy leading at 638,985 BTC, followed by mining giants Mara Holdings and XXI. Metaplanet’s Director of Bitcoin Strategy, Dylan LeClair, hinted on X that this purchase is merely the “first tranche” of further buys, signaling more firepower from the $1.4 billion raise earmarked for September-October deployments.

The firm’s ecosystem expansions further amplify its commitment. On September 17, Metaplanet launched two subsidiaries: Bitcoin Japan Inc. in Tokyo, focused on Bitcoin-linked media, conferences, and platforms (including the acquisition of the bitcoin.jp domain), and Metaplanet Income Corp. in Miami, dedicated to income-generating Bitcoin financial products like derivatives. Both are co-led by CEO Simon Gerovich, who celebrated the purchase on X, emphasizing the 395.1% YTD yield as proof of the strategy’s efficacy.

Looking ahead, Metaplanet’s trajectory could catalyze more Asian firms to follow suit, potentially shifting the epicenter of corporate crypto adoption eastward. With 25,555 BTC in the vault and capital for more, the firm is not just holding Bitcoin—it’s betting the future on it.