#25 BTC CompanyFrance · Euronext Growth Paris: ALCPB · Technology
Capital B
Capital B, formerly The Blockchain Group, is a Paris-listed Treasury Company that holds BTC as its main treasury asset, buys more BTC with equity and convertible bonds, and runs data, AI, and decentralized technology consulting businesses.
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BTC Holdings
3,538 BTC
As of 2026-09-28
- Holdings
BTC Reserve
3,538 BTC
Average Cost $100,097 / BTC · 34 Purchases and 0 Sales since 2024-11-05
- Holdings
- Average Cost
- Purchase (size = amount)
- Sale (size = amount)
BTC history
| Date | Type | Change | Holdings | Cumulative cost | Average Cost | Sources | |
|---|---|---|---|---|---|---|---|
| 2026-09-28 | Holdings Snapshot | +399 BTC+12.71% | 3,538 | $354.14M | $100,097 | Report | |
| 2026-09-28 | Purchase | +13 BTCfor $1.1M | — | — | — | Report | |
| 2026-09-14 | Purchase | +4 BTCfor $305.57K | — | — | — | Report | |
| 2026-09-07 | Purchase | +376 BTCfor $28.8M | — | — | — | Report | |
| 2026-08-17 | Purchase | +5 BTCfor $318.53K | — | — | — | Report | |
| 2026-08-03 | Purchase | +1 BTCfor $63.91K | — | — | — | Report | |
| 2026-06-30 | Holdings Snapshot | +251 BTC+8.69% | 3,139 | $323.56M | $103,077 | Report | |
| 2026-06-01 | Purchase | +4 BTCfor $296.35K | — | — | — | Report | |
| 2026-05-18 | Purchase | +192 BTCfor $14.85M | — | — | — | Report | |
| 2026-04-27 | Purchase | +6 BTCfor $457.94K | — | — | — | Report | |
| 2026-04-20 | Purchase | +12 BTCfor $855.96K | — | — | — | Report | |
| 2026-04-13 | Purchase | +37 BTCfor $2.57M | — | — | — | Report | |
| 2026-03-31 | Holdings Snapshot | +65 BTC+2.3% | 2,888 | $304.52M | $105,445 | Report | |
| 2026-03-23 | Purchase | +44 BTCfor $3.1M | — | — | — | Report | |
| 2026-03-16 | Purchase | +8 BTCfor $555.72K | — | — | — | Report | |
| 2026-03-09 | Purchase | +2 BTCfor $140.58K | — | — | — | Report | |
| 2026-02-16 | Purchase | +6 BTCfor $378.05K | — | — | — | Report | |
| 2026-02-09 | Purchase | +5 BTCfor $365.51K | — | — | — | Report | |
| 2025-12-31 | Holdings Snapshot | +11 BTC+0.39% | 2,823 | $299.99M | $106,265 | Report | |
| 2025-11-25 | Purchase | +5 BTCfor $507.12K | — | — | — | Report | |
| 2025-10-20 | Purchase | +6 BTCfor $658.22K | — | — | — | Report | |
| 2025-09-30 | Holdings Snapshot | +1,024 BTC+57.27% | 2,812 | $298.82M | $106,267 | Report | |
| 2025-09-29 | Purchase | +12 BTCfor $1.31M | — | — | — | Report | |
| 2025-09-22 | Purchase | +551 BTCfor $62.36M | — | — | — | Report | |
| 2025-09-15 | Purchase | +48 BTCfor $5.39M | — | — | — | Report | |
| 2025-08-11 | Purchase | +126 BTCfor $14.18M | — | — | — | Report | |
| 2025-08-05 | Purchase | +62 BTCfor $7.06M | — | — | — | Report | |
| 2025-07-28 | Purchase | +58 BTCfor $6.76M | — | — | — | Report | |
| 2025-07-21 | Purchase | +22 BTCfor $2.54M | — | — | — | Report | |
| 2025-07-14 | Purchase | +29 BTCfor $3.15M | — | — | — | Report | |
| 2025-07-07 | Purchase | +116 BTCfor $12.19M | — | — | — | Report | |
| 2025-06-30 | Holdings Snapshot | +1,168 BTC+188.39% | 1,788 | $183.88M | $102,843 | Report | |
| 2025-06-30 | Purchase | +60 BTCfor $6.28M | — | — | — | Report | |
| 2025-06-23 | Purchase | +75 BTCfor $7.85M | — | — | — | Report | |
| 2025-06-17 | Purchase | +182 BTCfor $19.35M | — | — | — | Report | |
| 2025-06-02 | Purchase | +624 BTCfor $68.61M | — | — | — | Report | |
| 2025-05-22 | Purchase | +227 BTCfor $24.2M | — | — | — | Report | |
| 2025-03-31 | Holdings Snapshot | +580 BTC+1,450% | 620 | $57.59M | $92,887 | Report | |
| 2025-03-26 | Purchase | +580 BTCfor $53.92M | — | — | — | Report | |
| 2024-12-31 | Holdings Snapshot | — | 40 | $3.67M | $91,733 | Report | |
| 2024-12-04 | Purchase | +25 BTCfor $2.58M | — | — | — | Report | |
| 2024-11-05 | Purchase | +15 BTCfor $1.09M | — | — | — | Report |
BTC holdings comparison
- #1Strategy847,666 BTC
- #2Twenty One Capital43,514 BTC
- #3Metaplanet43,000 BTC
- #4MARA Holdings35,577 BTC
- #5Strive27,462 BTC
- #6Galaxy Digital21,084 BTC
- #7Bullish19,990 BTC
- #8SpaceX18,712 BTC
- #9Hut 817,316 BTC
- #10Coinbase Global17,311 BTC
- #25Capital B3,538 BTC
Capital Structure
- Amplification
- —
- Calculated by treasury-company.com
- USD Assets
- —
| Seniority | Credit Instrument | Type | Notional | Units outstanding | Total Notional | Rate | Asset Rating | Sources | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | OCA B-02 bitcoin-indexed convertible bonds (Blockstream Capital Partners, 0%, due 2030-06) | convertible note | €1.00 | 55,279,428 | $63.02M | 0% | 3.21×BTC Rating | Report | |
| 1 | OCA A-03 bitcoin-indexed convertible bonds (TOBAM, 0%, due 2030-06) | convertible note | €1.00 | 6,000,000 | $6.84M | 0% | 3.21×BTC Rating | Report | |
| 1 | OCA B-03 bitcoin-indexed convertible bonds (Moonlight Capital, 0%, due 2030-06) | convertible note | €1.00 | 4,610,177 | $5.26M | 0% | 3.21×BTC Rating | Report | |
| 1 | OCA A-04 bitcoin-indexed convertible bonds (TOBAM, 0%, due 2030-07) | convertible note | €1.00 | 5,000,000 | $5.7M | 0% | 3.21×BTC Rating | Report | |
| 1 | OCA B-04 bitcoin-indexed convertible bonds (Adam Back, 0%, due 2030-07) | convertible note | €1.00 | 5,045,020 | $5.75M | 0% | 3.21×BTC Rating | Report | |
| 1 | OCA A-05 bitcoin-indexed convertible bonds (TOBAM, 0%, due 2030-08) | convertible note | €1.00 | 6,500,000 | $7.41M | 0% | 3.21×BTC Rating | Report |
Asset Rating and Amplification are calculated by treasury-company.com from the curated Capital Structure. They are not the Company's numbers and not an agency credit rating.
Values in EUR are converted to USD at 1.14 USD per EUR as of 2026-09-25. Source: Board of Governors of the Federal Reserve System (US), U.S. Dollars to Euro Spot Exchange Rate (DEXUSEU), retrieved from FRED, Federal Reserve Bank of St. Louis.
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