Convano, a Japanese listed company, has increased its Bitcoin holdings by 155 BTC, bringing its total to 519.93 BTC. This move highlights the company's growing interest in cryptocurrency investments. Additionally, S-Science, another Japanese firm, has significantly raised its Bitcoin investment limit from 500 million yen to 9.6 billion yen, equivalent to approximately $65.3 million. S-Science currently holds 30.74 BTC, reflecting its strategic shift towards larger cryptocurrency allocations.