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Japanese investment firm Metaplanet is doubling down on its Bitcoin strategy with a significant new acquisition. On August 19, the Tokyo-based company announced it had purchased an additional 518 BTC, worth approximately $61 million, bringing its total Bitcoin reserves to 18,113 BTC—valued at over $1.85 billion at current market prices.

The latest buy was disclosed via the company’s official account on X (formerly Twitter), noting that the firm paid an average of $118,519 per bitcoin. With this purchase, Metaplanet has increased the average cost basis of its entire BTC holdings to $101,911 per BTC.

This move strengthens Metaplanet’s position as a major player in the corporate Bitcoin space, now ranking as the sixth-largest corporate holder of BTC globally. The acquisition is part of the company’s ongoing Bitcoin Treasury Operations strategy, in which Bitcoin serves as a core asset on its balance sheet—an approach inspired by pioneers like MicroStrategy.

BTC Yield Update: A Metric of Shareholder Value

Alongside the acquisition, Metaplanet released a new performance update for its BTC Yield—a proprietary metric the company uses to measure Bitcoin growth relative to the number of fully diluted shares outstanding.

For the period spanning July 1 to August 12, Metaplanet reported a BTC Yield of 26.5%, signaling continued growth in shareholder value tied directly to its Bitcoin accumulation.

Here’s how BTC Yield has trended over recent periods:

• Q3 2024: 41.7%

• Year-end 2024: 309.8%

• Q1 2025: 95.6%

• Q2 2025: 129.4%

The company also tracks BTC Gain, another internal metric designed to assess the long-term accretive effect of Bitcoin holdings on shareholder equity—though specific figures on BTC Gain were not disclosed in this update.

Market Reaction: Shares Slide Despite Positive Momentum

Despite the strategic expansion and promising performance metrics, shares of Metaplanet (Ticker: 3350) fell 2.7% on Tuesday, closing at 975 yen (roughly $6.60). The dip could reflect broader market volatility or short-term profit-taking, but the company appears undeterred in its Bitcoin-first strategy.

With a growing BTC portfolio and increasing focus on blockchain-based shareholder metrics, Metaplanet continues to position itself as a trailblazer in the corporate adoption of Bitcoin—not just as an asset, but as a core component of financial strategy.

Stay tuned for more updates on Metaplanet’s Bitcoin journey and its impact on the evolving intersection of corporate finance and digital assets.