In recent years, an increasing number of publicly traded companies have added the cryptocurrency Bitcoin (BTC) to their treasury reserves. These firms treat BTC as a strategic asset—part hedge, part store-of-value, part investor draw. The following is a summary of the largest corporate Bitcoin holders, based on the most current publicly available data.
1. Strategy (formerly MicroStrategy)
Strategy is by far the largest corporate holder of Bitcoin. As of mid-2025 the company holds roughly ~628,000 Bitcoin according to multiple trackers.
At today’s prices that represents tens of billions of dollars. Strategy has re-positioned itself essentially as a Bitcoin treasury company, issuing equity and convertible debt to fund purchases of BTC.
Because of its scale and the fact that its business strategy now revolves around Bitcoin accumulation, Strategy serves as a proxy for Bitcoin exposure in public markets.
2. MARA Holdings, Inc.
MARA (formerly known as Marathon Digital Holdings) is a major bitcoin-mining company that also holds a significant BTC treasury.
According to tracking sites, MARA holds in the ballpark of ~50,000-55,000 BTC.
Its holdings are smaller than Strategy’s, but notable among companies whose primary business isn’t simply buying Bitcoin for treasury reserves.
3. XXI (“Twenty One Capital”)
XXI is another publicly listed firm that has adopted a Bitcoin treasury strategy. It holds approximately ~37,000 BTC according to tracking data.
While not as large as the first two, its holdings underscore the breadth of companies incorporating BTC into balance-sheets.
4. Riot Platforms, Inc.
Riot is a major bitcoin-mining firm whose treasury includes self-mined Bitcoin. It is estimated to hold roughly ~19,000–20,000 BTC.
Its business model differs somewhat from purely treasury-accumulation firms, but its holdings place it among the top corporate Bitcoin holders.
5. Tesla, Inc.
While Tesla’s primary business is electric vehicles and energy solutions, it made headlines with its Bitcoin purchase. As of the latest data Tesla holds around ~11,000 BTC.
Its amount is considerably smaller than the “treasury companies,” but the brand recognition and implications for corporate adoption are significant.
What These Holdings Mean & Why It Matters
- Scale of holdings: With Strategy holding ~600 k BTC, it alone may hold around 3% or more of Bitcoin’s total fixed supply (~21 million coins).
- Corporate treasury strategy: Companies are increasingly treating Bitcoin as part of their corporate treasury, aiming for inflation hedging, potential upside, and diversification.
- Risk and volatility: Because Bitcoin is highly volatile, firms with large BTC holdings assume considerable risk. Analysts warn that such companies may be vulnerable in a downturn.
- Market signal: These large holdings signal to markets that corporate interest in Bitcoin is not purely speculative—they reflect strategic asset allocation decisions.
Key Caveats & Considerations
- Data limitations: While public companies report holdings via filings or trackers, exact on-chain verification may be limited. Some trackers aggregate data from multiple sources and may have slight discrepancies.
- Business vs treasury: Some companies hold Bitcoin as part of their core business (mining, asset-management), others hold it purely as treasury. The risk profile differs.
- Regulatory landscape: Holding large amounts of Bitcoin may raise regulatory, accounting, auditing and tax concerns—especially for firms not traditionally in the crypto business.
- Liquidity & exposure: While holding Bitcoin gives exposure, it does not guarantee performance. The value is still tied to Bitcoin’s market price and broader crypto market dynamics.
Conclusion
As of mid-2025, a small but growing group of publicly-traded companies have accumulated significant Bitcoin holdings. Strategy (formerly MicroStrategy) leads by a wide margin with hundreds of thousands of BTC. Following at a distance are MARA, XXI, Riot and Tesla. These corporate holders reflect a deeper institutionalisation of Bitcoin beyond retail and purely speculative investment. However, large holdings also bring large risks. Investors and observers should watch how these companies manage their Bitcoin strategies, reporting transparency, and responses to crypto-market swings.
