Castle, the company behind an automated bitcoin financial stack for businesses, has said it is opening its platform to individuals, bringing its high-yield product to personal accounts along with a first for the category: the option to take dividend income in bitcoin at whatever ratio the customer picks.
The yield comes from STRC, Strategy‘s perpetual preferred stock, which Castle added earlier this year and which currently pays a 12% annual dividend on a semi-monthly schedule.
Holders can take 100% of that payout in cash, 100% in bitcoin, or anything in between, according to a Tuesday statement. Most Castle customers land in the middle, the company said, covering operating expenses with cash while the remainder compounds into bitcoin automatically at every payout.
“Investors have long faced a choice between earning steady yield and holding bitcoin. Castle eliminates that trade-off,” co-founder and CTO João Almeida said. “By enabling a portion of dividend income to be automatically converted into bitcoin, so customers get both cash flow and long-term upside.”
The broader pitch is consolidation: Castle puts operating cash, fixed income, and bitcoin accumulation on one platform, cutting out the shuffle between a bank, an onramp, and a brokerage. The system is built automation-first: users define a strategy once and the platform executes it.
Until now, Castle served business entities exclusively — restaurants, gyms, churches, accounting firms, e-commerce shops, auto dealers, SaaS companies, real estate, and non-profits among them. The push into personal accounts came from those same customers.
“Feedback we heard over and over from business owners was: ‘I love this stack — when can I use it personally?'” co-founder and CEO Stephen Cole said. “Today we’re answering that. The same automated bitcoin-powered financial stack that runs their company’s balance sheet can now run their personal finances.”
Castle was founded by Cole and Almeida and is backed by Boost VC and Winklevoss Capital. More information about the company’s product can be found here.
Strategy has added $650 million to its USD reserve and repurchased $109 million of STRC preferred stock, showing again that the company’s Bitcoin strategy is no longer just a simple accumulation story.
The company, formerly MicroStrategy, filed an update showing the reserve increase was funded through MSTR common stock ATM sales. It also sold 1,690 BTC for $108.6 million and used that capital to buy back STRC preferred shares.
That combination matters because Strategy remains the market’s most watched corporate Bitcoin holder, but its balance sheet has become much more active. It is still a Bitcoin treasury company, but it is also managing preferred stock obligations, reserve duration, equity issuance, buybacks, and investor expectations.
In other words, this is no longer just about how many BTC Strategy owns.
It is about how the company finances and protects the structure built around that BTC.
For more details, visit the official Sec platform.
TL;DR
Strategy added $650 million to its USD reserve.
The company sold 1,690 BTC for $108.6 million.
It used proceeds to repurchase $109 million of STRC preferred stock.
Why The USD Reserve Matters
A larger cash reserve gives Strategy more flexibility.
Bitcoin-heavy companies face a basic challenge: BTC is liquid, but volatile. If a company has dividend obligations, debt commitments, preferred shares, operating costs, or buyback programs, it may not want to rely entirely on Bitcoin sales during weak markets.
That is where a USD reserve helps.
Cash gives management room to meet obligations without being forced into poorly timed asset sales. It also helps reassure preferred-stock investors, who may care more about payment reliability than long-term Bitcoin conviction.
For a company as visible as Strategy, that reserve is part of the investment case.
The market wants Bitcoin upside, but it also wants to know the capital structure can survive volatility.
STRC Shows The New Strategy Model
The STRC preferred stock program is one of the clearest signs that Strategy’s model has evolved.
Preferred securities create a different kind of investor relationship. Holders may be looking for yield, payment priority, or exposure to a Bitcoin-linked corporate structure without holding common stock. That means Strategy has to think beyond BTC-per-share narratives.
Repurchasing $109 million of STRC suggests management is actively managing that layer of the capital stack.
The sale of 1,690 BTC to support the repurchase will attract attention because Bitcoin investors naturally watch every coin leaving the treasury. But the broader question is whether the sale improves the overall structure enough to justify the reduced BTC balance.
That is the trade-off.
Selling BTC Does Not Automatically Mean Abandoning Bitcoin
This is where the market needs a bit of nuance.
A company can sell Bitcoin tactically while still being built around a long-term Bitcoin thesis. That does not make every sale bullish, and it does not make every sale bearish. It depends on why the sale happened, what the proceeds fund, and whether the company’s net BTC exposure continues to support the broader strategy.
Strategy still holds 840,447 BTC, according to the filing context.
That is a massive position. The sale of 1,690 BTC is meaningful, but not thesis-ending on its own. It looks more like capital-structure management than a reversal of the company’s Bitcoin identity.
Still, it does show that Strategy’s “never sell” image is now more complicated than the market once assumed.
Investors Are Watching Liquidity, Not Just BTC Count
Traditional investors often care about liquidity, duration, obligations, and funding sources.
Bitcoin investors tend to center on BTC holdings.
Strategy now has to speak to both audiences. Its cash reserve gives conventional investors more comfort. Its huge BTC balance keeps the Bitcoin thesis alive. Its preferred stock instruments create yield-oriented products. Its common stock remains tied to both Bitcoin sentiment and capital-markets execution.
That is a lot to manage.
The larger and more complex Strategy becomes, the less useful it is to view the company as a simple BTC wrapper.
It is becoming a Bitcoin financial vehicle.
What To Watch Next
The next important signals will be reserve size, BTC holdings, STRC performance, and whether future Bitcoin sales continue.
If Strategy keeps increasing its USD reserve while maintaining a huge BTC position, the market may accept the structure as mature treasury management. If BTC sales accelerate or reserves become necessary to cover stress, investors may read it differently.
For now, the filing shows active capital management.
Strategy remains a massive Bitcoin holder, but it is also building a more traditional liquidity buffer around that position. That may be less pure than the old accumulation story, but it may also make the structure more durable.
Bitcoin remains the center of Strategy’s identity. Cash is becoming the stabilizer around it.
This article is based on Strategy’s August 2026 corporate filings and reserve update.
This article was written by the News Desk and edited by Samuel Rae.
This report is based on information released by Sec. at Sec
Strategy initiated open-market repurchases of STRC last week (July 20 through July 26, 2026), buying 288,930 shares for ~$25 million at an average price of $86.52. Notably, the company bought no Bitcoin and continued to grow its cash reserve.
So what is going on here? Why is the largest Bitcoin treasury company buying back its credit?
Context
In June 2026, STRC fell far below the $100 stated amount. Check out these two articles for some in depth analysis about what exactly happened:
Last week’s STRC buyback follows Strategy’s Digital Credit Capital Framework, announced on June 29 in response to the June volatility, which authorized up to $1 billion of repurchases across STRC, STRF, STRD, and STRK. Likely because STRC is now viewed as Strategy’s flagship product, STRC was identified as the initial priority for these buybacks.
Buyback logic starts with the position of MSTR common stock in the capital structure. Common equity owns the residual value after every senior claim has been satisfied. Strategy’s BTC and cash are its liquid assets. Debt and preferred stock sit ahead of MSTR. Strategy’s USD Reserve (read: cash) offset part of those senior claims. The common stock therefore represents the value left after subtracting debt and preferred stock from the bitcoin reserve and adding back available cash.
This is effectively Strategy’s recently introduced “Net Bitcoin Per Share” metric. Strategy’s current methodology calculates Net BTC by taking bitcoin holdings and subtracting the bitcoin-equivalent value of out-of-the-money convertible debt, other debt-like instruments, and outstanding perpetual preferred stock, then adding back the USD Reserve. Notice that this is exactly the same description as the prior paragraph!
Net BTC is divided by fully diluted common shares to produce Net BPS. Strategy’s disclosures mark July 23 as the boundary for its revised mNAV methodology, which uses Net BPS as its denominator.
This metric gives MSTR investors a direct view of BTC economically attributable to common equity after senior claims. Gross Bitcoin Per Share can rise when Strategy issues more preferred stock or debt to buy bitcoin. Net Bitcoin Per Share captures the liability created alongside that bitcoin purchase, answering the question of how much bitcoin remains for common shareholders after the more senior investors in the capital structure are paid.
Therefore, Net BPS provides a framework for measuring the accretive or dilutive effect of capital markets transactions on MSTR. Think of it as another new metric that investors may evaluate along with the existing metrics already being used.
Ok, but why STRC buybacks?
The answer is that retiring liabilities at below their notional values is accretive on a net BTC basis.
Let’s consider a simple balance sheet with easy numbers to understand the basic mechanics.
Assume a company owns $100 million of BTC and carries $50 million of senior liabilities. Common equity is therefore a $50 million residual claim:
$100 million assets – $50 million liabilities = $50 million equity
Now assume the company can retire those $50 million of liabilities for $40 million. It uses $40 million of its assets, leaving $60 million of assets and zero remaining liabilities. The common equity residual rises from $50 million to $60 million.
$60 million assets – $0 liabilities = $60 million equity
The equity claim went from $50 million to $60 million. So spending $40 million to eliminate a $50 million claim creates $10 million of value for the residual owner (the common equity investor).
The STRC repurchase follows the same structure. Strategy paid an average of $86.52 to retire a security with a $100 stated amount. Each repurchased share removed $100 from the preferred stock claim used in the company’s Net BTC calculation while consuming only $86.52 of capital. The $13.48 spread creates gross accretion to MSTR.
Strategy retired $28.893 million of STRC stated amount for about $24.998 million based on the reported average price. The difference equals approximately $3.895 million, and this value accrues to MSTR.
(It’s worth mentioning that also related to this is STRC’s current 12% annualized dividend rate. Retiring $28.893 million of STRC stated amount also removes roughly $3.47 million of annual dividend requirements. Also consider that since STRC is still well below $100, the company likely will raise the dividend, meaning the actual annual dividend expense removed is likely higher.)
Conclusion
Net BTC identifies the residual BTC owned by the common stock by considering all the senior liabilities which sit ahead. The STRC buyback is a move of financial engineering to improve the Net BTC per share metric of the company.
Disclaimer: This content was prepared on behalf of Bitcoin For Corporations for informational purposes only. It reflects the author’s own analysis and opinion and should not be relied upon as investment advice. Nothing in this article constitutes an offer, invitation, or solicitation to purchase, sell, or subscribe for any security or financial product.
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