Twenty One, trading under the ticker XXI (NASDAQ: XXII), is a Bitcoin-native treasury company founded in 2025 by Jack Mallers, the well-known Bitcoin advocate and founder of the Strike payments app. Backed by an unprecedented consortium of institutional heavyweights including Tether, SoftBank, and Cantor Fitzgerald, Twenty One launched with the explicit mission of becoming one of the largest corporate holders of Bitcoin in the world. With approximately 43,514 BTC on its balance sheet, the company has rapidly achieved that goal, ranking among the top publicly traded Bitcoin holders globally.
Twenty One represents a new generation of Bitcoin treasury companies -- purpose-built from the ground up for Bitcoin accumulation rather than pivoting from a legacy business. While Strategy transformed itself from an enterprise software company into a Bitcoin treasury vehicle, Twenty One was conceived from inception as a pure-play Bitcoin holding company. This clean-sheet approach, combined with the deep pockets of its institutional backers, allowed Twenty One to launch with a treasury that immediately placed it among the largest corporate Bitcoin holders in the world.
Bitcoin Treasury Strategy
Twenty One's treasury strategy is aggressive and unambiguous: accumulate as much Bitcoin as possible. The company went public through a SPAC merger in 2025, with its institutional backers contributing substantial Bitcoin and capital to the combined entity. Tether, the issuer of the world's largest stablecoin, contributed a significant portion of the initial BTC treasury. SoftBank, the Japanese conglomerate known for its bold technology investments, provided additional capital. Cantor Fitzgerald, the financial services firm, facilitated the deal structure and contributed its expertise in capital markets.
Jack Mallers, as CEO, has positioned Twenty One as a vehicle for investors to gain leveraged exposure to Bitcoin through a publicly traded equity. The company's strategy involves ongoing Bitcoin acquisition funded through capital market activities, including equity issuances and debt instruments. Mallers has been vocal about his belief that Bitcoin is the most important monetary innovation in history, and Twenty One is designed to be the most direct and efficient way for public market investors to participate in that thesis.
With approximately 43,514 BTC, Twenty One holds one of the largest corporate Bitcoin treasuries in existence, rivaling even much older companies like Marathon Digital. The speed at which the company assembled this position -- essentially from a standing start in 2025 -- is a testament to the scale of institutional capital that has begun flowing into Bitcoin through corporate treasury vehicles.
Significance
Twenty One's formation and rapid ascent marks a significant milestone in the evolution of the Bitcoin treasury company model. The involvement of Tether, SoftBank, and Cantor Fitzgerald signals that the institutional acceptance of Bitcoin has advanced to the point where major financial players are willing to create purpose-built public vehicles for BTC accumulation. Jack Mallers' involvement bridges the Bitcoin grassroots community and the institutional world, bringing credibility with both audiences.
The company's existence also represents an evolution of the Strike ecosystem. Mallers' earlier work with Strike focused on Bitcoin payments and Lightning Network adoption. Twenty One extends his vision to the capital markets, creating a publicly traded company that embodies the belief that holding Bitcoin on a corporate balance sheet is a superior long-term capital allocation strategy.