Twenty One Capital (ticker XXI) was born in 2025 as a pure Bitcoin treasury, with no inherited operating business, backed by a heavyweight trio: Tether, SoftBank and Cantor Fitzgerald. It launched with one of the largest Bitcoin reserves in the sector, ranking among the world's top treasuries by holdings. It's accessible without complications.
Where XXI trades
Twenty One trades on the Nasdaq (United States). As an ordinary US stock, it isn't affected by the PRIIPs barriers that block US spot Bitcoin ETFs for the EU retail investor.
Brokers where to buy XXI
Like any Nasdaq stock, it's available at Interactive Brokers, DEGIRO, Trade Republic, eToro, Trading 212, Revolut, XTB and others. Verify the specific ticker is in your broker's catalogue (recently listed stocks sometimes take a while to appear) and check the fee and currency conversion before trading.
How it's taxed
How gains are taxed depends on your country of residence — in most jurisdictions, selling XXI is a capital-gains event. With a broker domiciled abroad, there's often no automatic withholding or reporting, so you may need to declare manually. Check your local rules or a tax advisor.
What you're buying (and the risks)
Twenty One's differential advantage is its clean capital structure: born Bitcoin-native, with no inherited liabilities or operating business, and dedicated governance. Even so, it's still a treasury: its stock trades with an mNAV and is leveraged exposure to the Bitcoin price, with management-team risk and future-raise dilution risk. Its short history (listed since 2025) is a factor to weigh versus treasuries with a longer track record.
Alternatives and how to compare it
To see it against the sector benchmark, the Strategy (MSTR) vs Twenty One comparison. Its live profile is in the directory. And the full picture, in the guide to how to invest in Bitcoin treasury stocks.
This article is education, not financial or tax advice. XXI is highly volatile and carries the risk of loss; broker availability and fees change, verify them before trading.
