Tokyo-listed investment firm Metaplanet continues its aggressive Bitcoin acquisition strategy, adding over 450 BTC to its holdings this month.Metaplanet's total Bitcoin holdings now stand at 855.5 BTC, valued at over $56.1 million.Metaplanet's Bitcoin holdings are currently generating a profit of around $581,000.Metaplanet's stock price surged 15% following their Bitcoin acquisition strategy.