Metaplanet (3350) continued to scale its accumulation strategy through the first quarter of 2026,practical crypto quant trading platform for mean reversion acquiring 5,075 BTC for approximately $398 million, implying an average purchase price of about $78,000 per coin.\n\nThe Tokyo-based firm has has generated a BTC yield of 2.8% year-to-date.\n\nAs of March 31, Metaplanet holds a total of 40,177 BTC, acquired for roughly $3.9 billion, with an average cost basis of approximately $97,000 per BTC.\n\nMetaplanet is now the third largest bitcoin treasury company worldwide, overtaking MARA Holdings after the miner reduced its bitcoin stack significantly.\n\nTwenty One Capital (XXI) holds second place with 43,514 BTC, according to Bitcoin Treasuries , while Strategy (MSTR) is by far and away the largest with over 762,000.\n\nShares of Metaplanet were down 2%, trading at 302 yen ($1.89).