Japanese investment firm Metaplanet has significantly increased its Bitcoin holdings, now owning 245.9 BTC worth ¥2.45 billion ($14.8 million). This strategic move has led to a substantial rise in Metaplanet's shares, which have surged by 60% in five days and over 800% year-to-date. The company's latest acquisition of Bitcoin, valued at ¥200 million, has further boosted its stock performance. Metaplanet's aggressive Bitcoin strategy, inspired by MicroStrategy, has proven to be highly effective, driving its stock (3550) to new heights. Since April, Metaplanet's shares have increased 9x.