Twenty One Capital to List on NYSE as ‘XXI’ With 43,500 BTC Treasury After CEP Merger

A new way to trade Bitcoin balance-sheet exposure is about to hit the tape. Twenty One Capital, a Bitcoin treasury company formed with backing from Tether, Bitfinex, Cantor Fitzgerald, and SoftBank, is set to begin trading on the New York Stock Exchange on December 9 under the ticker XXI, launching with roughly $4 billion in BTC.

Shareholders of Cantor Equity Partners (CEP) approved a business combination with Twenty One, clearing the final vote. The transaction, including a PIPE financing, is expected to close around December 8 subject to remaining SEC filing conditions. Once complete, the combined company will operate as Twenty One Capital, Inc., with Class A common stock listed on the NYSE. The team has pitched the entity as the first Bitcoin-native company that expects to be publicly listed. CEO and co-founder Jack Mallers signaled on X that the team plans to be on the NYSE floor Tuesday.

The balance sheet is the headline. Twenty One plans to hold about 43,500 BTC at launch—after a 5,800 BTC addition from Tether—positioning it as a prospective No. 3 among corporate holders, behind only Strategy and Bitcoin miner MARA. The firm’s name nods to Bitcoin’s hard cap of 21 million coins; an estimated 19.95 million have been mined to date.

CEP shares jumped roughly 22% to $14.50 on Thursday following the announcement, though they remain down about 66% over six months after an April spike when the merger was first floated. Meanwhile, Bitcoin has clawed back some losses, up about 2.5% on the week and recently back above $93,000 after a dip below $85,000 on Monday. BTC is still roughly 26% off its early-October all-time high above $126,000. On the prediction side, Myriad markets currently assign a 76% probability that Bitcoin trades to $100,000 before revisiting $69,000.

What matters here is the structure: a listed “BTC treasury” as an alternative to spot ETFs and the existing public-company proxy trade. If XXI trades at a persistent premium or discount to its underlying coins, that spread becomes the instrument—creating opportunities for long-beta buyers seeking torque and for arb desks running basis trades against spot or futures. Management will also gain a playbook that ETFs don’t have: issuing equity or converts into strength to accumulate more BTC, or using PIPE and secondary capital to scale quickly. That optionality can amplify upside in bull cycles, but it can also pressure shareholders if issuance outpaces NAV growth.

Governance and counterparty choices will be closely scrutinized. The consortium’s ties—particularly with Tether and Bitfinex—introduce perceived conflict risk that some institutional allocators may price in until custody, audit, and reserve policies are made explicit in filings. Clear disclosures on where and how the 43,500 BTC are secured, any lending or rehypothecation, and the use (or avoidance) of derivatives will be pivotal for index inclusion and risk committees. A simple, verifiable HODL mandate generally commands the cleanest multiple.

There’s also narrative psychology. Many investors prefer “operating companies with BTC on the balance sheet” during risk-on phases because equity can reflect forward optionality—new financing, strategic partnerships, or treasury growth—beyond the coin itself. Others will favor the tighter tracking and lower fees of spot ETFs. XXI will have to earn its premium with predictable governance, transparent treasury reporting, and disciplined capital allocation.

What to watch at launch: the initial premium/discount versus spot BTC, daily disclosure cadence on treasury addresses and custody, any hedging language in the S-1/8-Ks, and whether liquidity scales enough for inclusion in major indices. If execution is tight, XXI could become the default listed play for Bitcoin-native balance-sheet exposure just as the market debates whether $100,000 or $69,000 comes first.