Metaplanet deposits 2,400 Bitcoin worth $186M into Coinbase Prime

Metaplanet, the Tokyo-listed company that has quietly become one of the world’s largest corporate Bitcoin holders, moved roughly 2,400 BTC worth approximately $186M into Coinbase Prime over a span of days in late August. For anyone watching the blockchain and wondering if Japan’s answer to MicroStrategy was about to hit the sell button, the company’s CEO had a simple message: relax.

The deposits, split across multiple transactions on August 25 and August 28, represented a sizable chunk of the firm’s treasury. But they were followed almost immediately by an even larger transfer of 3,000 BTC, valued at roughly $237M, on August 29. That’s over $420M in Bitcoin flowing into a single custodial platform in less than a week.

Custodial shuffling, not a fire sale

CEO Simon Gerovich addressed the inevitable speculation head-on. The transfers, he stated, are custodial in nature and do not signal any intention to liquidate the company’s Bitcoin position.

This isn’t the first time Metaplanet has triggered on-chain anxiety. Earlier in August, the company moved over 5,000 BTC between its own internal custodial addresses. Gerovich characterized those transfers as routine adjustments, the kind of housekeeping that large institutional holders perform regularly but that can look alarming on a blockchain explorer without context.

A $4 billion Bitcoin treasury

Metaplanet’s total Bitcoin holdings now stand at approximately 43,000 BTC. The company’s aggregate cost basis sits at around $4.09B, putting its average purchase price at roughly $96,191 per coin.

The strategy mirrors what Michael Saylor pioneered at MicroStrategy: use corporate balance sheet firepower to accumulate Bitcoin as a primary treasury reserve asset. Metaplanet has executed this playbook aggressively, building its position through consistent purchases funded by equity raises, convertible bonds, and operational cash flow.

Superplanet and the US expansion

Metaplanet is advancing a proposal to contribute 2,100 BTC along with $2.5M in cash toward a new venture called Superplanet.

Superplanet is envisioned as a US-based, Nasdaq-listed Bitcoin treasury platform, developed in partnership with Super League Enterprises. The proposal requires shareholder approval, with a vote targeted for the fourth quarter of 2026.

Contributing 2,100 BTC to a new entity would represent roughly 4.9% of Metaplanet’s current holdings.

Why the market barely flinched

Perhaps the most telling detail about this entire episode is what didn’t happen. Bitcoin’s price showed minimal reaction to Metaplanet’s transfers, even as hundreds of millions of dollars in BTC moved on-chain in plain view.