Twenty One Capital, the Bitcoin-focused treasury company led by Strike founder Jack Mallers, said it has received an additional 5,800 Bitcoin from stable-coin issuer Tether. The transfer lifts Twenty One’s holdings to about 43,500 BTC, worth roughly $5.1 billion at current prices, according to company statements on Tuesday. The enlarged stash would make the Austin-based firm the third-largest corporate holder of Bitcoin, trailing only Strategy (formerly MicroStrategy) and miner Marathon Digital. Twenty One is preparing to go public through a merger with Cantor Equity Partners, a special-purpose acquisition company whose shares trade on Nasdaq; the combined entity is expected to list under the ticker XXI. Mallers, who co-founded Twenty One alongside Tether, Bitfinex, Cantor Fitzgerald and SoftBank, said the company is “built on Bitcoin, backed with proof, and driven by a vision to reshape the global financial system.” The firm intends to publish a “Bitcoin per share” metric to offer investors transparent exposure to the cryptocurrency once trading begins.