[Vanguard, the world's second-largest asset manager, makes its first purchase of 4.5 million shares of Metaplanet through its ETF] Odaily reports that Vanguard's small-cap ETF, VSS, which manages $13 trillion in assets, has disclosed for the first time its purchase of 4.5 million shares of Bitcoin reserve company Metaplanet (3350.T), worth $7.5 million. Vanguard, the world's second-largest asset manager, has increased its Bitcoin exposure through this Bitcoin reserve company. (Bitcoin Treasuries)