Bitcoin coins moving into a secure institutional vault

Capital B Makes Its Biggest Bitcoin Buy in Nearly a Year

By Isaac • September 7, 2026 7:23 pm • Comments

Capital B just made its biggest Bitcoin purchase in nearly a year, adding 376 BTC to a treasury that now holds 3,521 bitcoin.

The French company said it spent €25.3 million on the new coins, or about $29.4 million at the exchange rate cited in current reporting. That works out to €67,182 per bitcoin for this transaction.

For a public company built around accumulating the world’s largest cryptocurrency, this was not a tentative buy. It was a substantial addition that completed a target Capital B had laid out only days earlier.

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In its September 7 announcement, Capital B said the purchase followed the completion of €1.44 million in capital increases under an ATM-type agreement with TOBAM and €28.7 million in private placements backed by global institutional investors, including Adam Back and TOBAM.

The company announced the completed purchase directly:

The latest acquisition takes Capital B’s total stack to 3,521 BTC. The company puts the aggregate acquisition value at €309.4 million, with an average cost of €87,878 per bitcoin.

Capital B also reported a year-to-date “BTC Yield” of 2.17%. That is the company’s measure of the percentage change in bitcoin holdings per fully diluted share, not a traditional investment yield or a promise of a cash return.

Its reported year-to-date “BTC Gain” was 61.3 BTC, with a corresponding “BTC € Gain” of €4.2 million.

Those distinctions matter. Bitcoin-treasury companies often frame performance around how much BTC exposure each fully diluted share represents.

Investors still have to weigh ordinary corporate risks, financing terms, dilution, the market value of the stock and Bitcoin’s own price volatility.

The company’s updated cost basis and holdings put the size of the strategy in clearer view:

Cointelegraph described the buy as Capital B’s largest since September 2025, when it acquired 551 BTC. The latest addition also moved Capital B ahead of Sweden’s H100 Group among publicly traded corporate Bitcoin holders, according to the report.

The bigger signal is the speed between financing and execution. Capital B said last week that fresh funding could support a 376-BTC purchase and lift its stack from 3,145 BTC to 3,521 BTC.

It has now completed that exact move.

That does not make the strategy risk-free. It does show that Capital B is still acting on its stated goal: raising capital, converting a meaningful portion into bitcoin and trying to increase BTC exposure per share over time.

A 376-BTC order is small beside Bitcoin’s global market. It is still a meaningful corporate-treasury purchase, and it keeps institutional accumulation in focus while prices remain volatile.

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