The thesis — Saylor's Accountant

1 · The premise

It's not a software company anymore

MicroStrategy started in 1989 as a business-intelligence software vendor. That business still exists, and still produces revenue, but it's not why anyone owns the stock. Since August 2020, the company — renamed Strategy Inc in 2025 — has used every available financing channel (cash on hand, convertible notes, common-stock ATM programs, five preferred-stock ATM programs) to do exactly one thing: buy Bitcoin and not sell it.

Michael Saylor, the founder and Executive Chairman, is also the largest individual MSTR holder. He's spent five years going on every podcast that will have him to argue this is the only rational treasury policy for a public company. His personal reputation, his control position, and his public statements are all stacked on top of the same bet. If the bet breaks, he doesn't have a graceful retreat to the software-vendor identity. That's the ground floor of the whole thing.

The company also has SOX-certified financials signed personally by Saylor (criminal liability for material misstatement), twelve consecutive years of clean KPMG audit opinions, and qualified custodians chartered by the OCC. The Custody page walks through why we accept that as the regulatory equivalent of proof-of-reserves — even though Strategy doesn't sign messages from its on-chain wallets.

2 · The mechanic

How sats-per-share grows

The headline metric on this site is sats per diluted share — Bitcoin holdings, expressed in 100-millionths of a coin, divided by the share count Strategy publishes in its weekly 8‑K. It's a balance-sheet ratio: BTC on the asset side, shares on the equity side. It moves only when the capital structure changes — not with the daily share price.

It grows in two ways.

Common-ATM accretion. Strategy sells fresh common stock through an at-the-market program at whatever the market is paying, and uses the proceeds to buy Bitcoin. When MSTR trades at a premium to its per-share BTC backing — the mNAV ratio is above 1.0 — each new share comes in carrying more Bitcoin than the existing shares already had. Pool gets bigger and richer per share at the same time. That's the counterintuitive part: dilution that's accretive. The arithmetic on the home page walks through one specific week.

Preferred ATMs — mostly non-dilutive capital. On top of the common ATM, Strategy runs five separate preferred-stock ATM programs, each a distinct security with its own coupon and structure. Four of the five (STRF, STRD, STRC, STRE) are non-convertible — their issuance never adds to common's share count. STRK is the exception: it converts to common at $1,000 strike, so the diluted-share denominator this site uses includes STRK on an if-converted basis.

▸ STRK — 8% coupon, convertible to common at $1,000 strike. The only convertible preferred; the rest are non-convertible.
▸ STRF — 10% coupon, perpetual, non-convertible. Pure fixed-income wrapper around the BTC stack.
▸ STRD — 10% coupon, deeply junior, non-cumulative. Cheapest cost of capital because the dividend is discretionary.
▸ STRC — variable-rate stretch preferred, monthly dividend, designed to track around par. Rate can move ±25 bp/month plus Fed policy moves; called "the iPhone moment" by Saylor.
▸ STRE — the newest series, similar profile to STRF.

For the four non-convertible preferreds, issuance does not dilute common — preferreds aren't common shares, and these four never convert. So a STRF / STRD / STRC / STRE raise that buys BTC adds to common's BTC-per-share regardless of where mNAV is. (STRK is convertible, so its share count already sits in the diluted denominator on an if-converted basis; an STRK raise still adds BTC, but the denominator also moves.) The pref-side gate isn't mNAV; it's "is the pref price near par" (otherwise Strategy locks in a bad cost of capital for the life of the security). Each series is a different point on the cost-of-capital curve: dividend rate, seniority, callability, duration. The Preferreds page breaks each one down individually.

The structural implication: even when the common ATM has to pause — because mNAV dipped below 1, or because the equity desk is full — the preferred ATMs can keep running. That's why the BTC count keeps climbing in weeks where the common-stock count doesn't.

3 · The premium puzzle

Why mNAV > 1 doesn't get arbitraged away

A basic sceptic objection: "If MSTR trades at 1.5× the per-share BTC value, why doesn't every rational investor sell MSTR, buy BTC directly, and pocket the spread?" That trade collapses the premium — if there's no growth term in the future cash flows. There is.

The market isn't paying for the static BTC stack. It's paying for the expected growth rate of sats-per-share — the rate at which the machine described in section 2 keeps adding BTC faster than it adds shares. As long as the accretion engine is running, every week ends with more BTC behind each share than the week before. A discount of forward sats-per-share at any positive growth rate will produce a present value above today's BTC NAV. That's the mNAV premium.

The skeptical version of that argument is: "fine, but the growth rate is an opinion. It depends on Strategy's continued ability to issue equity at a premium." That's true. The more honest framing is that mNAV reflects the market's belief about the durability of the engine — not a guaranteed cash flow. The mNAV page models what it would take for the engine to break, and the USD Reserve page tracks the multi-year buffer Strategy has built explicitly for the failure scenario.

Two consequences for share-price intuition:

▸ Share price goes up when either (a) Bitcoin goes up, holding sats-per-share constant, or (b) sats-per-share goes up, holding the BTC price constant. The site tracks both, on separate pages, so you can see which one is driving any given move.
▸ A share is not a redeemable claim on Bitcoin — you can't hand a share back to Strategy and receive BTC. The relationship is one-way: the BTC sits behind the share on the balance sheet, and the share's market value rides on what investors collectively believe that backing is worth, plus the engine.

3.5 · What breaks it

The engine doesn't run forever — here's what stops it

The whole thesis rests on one inequality: g > d. The growth rate of sats per share has to exceed the debasement rate of fiat. If the engine stalls, the premium collapses. Here's what stalls it.

mNAV drops below 1. When the market pays less than NAV for a share, common-ATM issuance becomes dilutive. Each new share brings in less BTC than existing shares already have, and sats per share declines. Strategy simply pauses the common ATM. The preferred ATMs can keep running — they don't depend on mNAV — but the accretive common engine stops.

Preferred coupons outpace purchases. Every perpetual preferred has a Forever Cost — the present value of BTC sold to fund the dividend stream, expressed in geometric series. If the combined coupon burden grows faster than weekly BTC purchases, sats per share trends down even without common issuance. The BTC-cost page tracks this in real time.

USD reserve exhaustion. Strategy has built a multi-year USD buffer explicitly for the scenario where both common and preferred ATMs freeze. The Reserve page audits it against the 10‑K cash flow statement. If the reserve falls below one year of non-BTC obligations (opex, interest, legal), the company faces a choice: sell BTC or default on obligations. Strategy has never been close, but the runway matters.

BTC price collapse with frozen issuance. The convertible notes are gone — Strategy refinanced them into preferreds, which don't have margin calls. But a severe BTC drawdown compresses mNAV, freezes issuance, and tests the USD reserve simultaneously. That's the stress scenario. The site's mNAV page models the threshold where each one triggers.

The point isn't that these are likely. The point is they're quantifiable. Every break condition has a number. Every number has a filing. If you want to know whether the engine is still running, don't read the headlines — check the sats per share.

4 · The audit

Where Saylor's Accountant earns its name

Strategy publishes the headline numbers (cumulative BTC held, BTC Yield KPI, diluted-share count) in its 8‑K and 10‑K filings. We don't take those headlines on faith. Every week:

▸ Each tranche is parsed out of the underlying 8‑K and reconciled against the cumulative count in the next filing — an internal-consistency check that would fail loudly if a number were wrong. The Ledger page shows the row-by-row math.
▸ Quarterly aggregates from the 10‑K and 10‑Q are cross-checked against the weekly tranche sum — a second independent check that the 8‑Ks and the audited financials describe the same balance sheet.
▸ Every preferred-series dividend is tracked against its prospectus-defined coupon, with the BTC-cost page answering the only question that matters for a perpetual: how much BTC does paying this coupon forever actually cost, in present-value terms?
▸ The USD Reserve is audited annually against the 10‑K's Consolidated Statement of Cash Flows — not just the headline buffer figure, but the year-over-year flows that produced it.

When a tranche fails extraction, or a number on this site doesn't reconcile to the underlying SEC filing, the row is flagged explicitly. We don't aggregate away the evidence. Every figure on every page links to its primary-source filing on EDGAR — you can audit us in one tab.

5 · The map

How to read this site

The nav groups the pages into four questions, in user-journey order:

Holdings — "what do they own?": Tranches is every weekly Bitcoin purchase, one row per 8‑K, since Aug 2020. Common tracks the diluted-share count and where it came from (ATM, converts, options, etc). Preferreds is the series-by-series breakdown.
Valuation — "what's it worth?": mNAV models the premium-to-NAV in three different forms (par, PV, ceiling). Valuation walks the residual-claim per share after senior obligations. BTC cost answers the perpetual-preferred coupon-cost question in present-value BTC. ROC tracks dividends paid vs. dividends earned, the way the IRS sees them.
Audit — "does the math check?": Reconcile ties the annual 10‑K cash-flow statement to where every dollar actually went. Ledger is the per-tranche row-level audit trail with EDGAR links.
Trust — "should I believe them?": Custody steel-mans the no-proof-of-reserves critique and explains what the SOX/audit substitute actually buys you. Reserve tracks the multi-year USD buffer for non-BTC obligations. Disclosures is the methodology and legal footnote.

6 · Glossary

Terms the rest of the site assumes

8‑K: A current report — the SEC form a public company files within 4 business days of a material event (earnings, M&A, executive changes, or — in Strategy's case — a weekly bitcoin purchase summary). Every weekly tranche on this site is a single 8‑K filing.
10‑K: The SEC's annual report. Audited financials, full footnotes, signed SOX certifications. For Strategy this is the fiscal-year-end balance sheet against which we cross-check every weekly 8‑K cumulative.
10‑Q: The quarterly version of the 10‑K. Reviewed (not audited), filed Q1/Q2/Q3 each year; Q4 is rolled into the 10‑K.
Sat (satoshi): The smallest indivisible unit of Bitcoin, named after its anonymous creator. 1 BTC = 100,000,000 sats. We express per-share Bitcoin backing in sats so the numbers stay readable as the BTC count grows and the common-share count grows into the hundreds of millions.
mNAV: Market cap divided by BTC NAV — what the market pays per share relative to the share's pro-rata BTC backing. mNAV = 1 means the market values one MSTR share at exactly its share of the BTC stack. Above 1 is a premium ("the wrapper is worth more than the BTC inside"); below 1 is a discount.
BTC NAV: The dollar value of Strategy's BTC holdings, marked at spot — Bitcoin held times current Bitcoin price. The denominator of the mNAV ratio.
ATM (at-the-market): A continuous-issuance program in which a public company sells stock into the open market at prevailing prices, in small increments, instead of doing one big offering. Strategy runs a common-stock ATM and five preferred-stock ATMs (one per series).
Preferred ATM: Same mechanism as an equity ATM, but for preferred stock. Strategy's preferred ATMs (STRK, STRF, STRD, STRC, STRE) raise non-dilutive capital — preferred shares aren't common shares, so a pref raise doesn't change the common share count or the sats-per-common-share ratio on the way in. The downstream cost is the recurring dividend.
ROC (return of capital): A tax-classification of a distribution: when a company pays a dividend that exceeds its current and accumulated earnings & profits, the excess is recharacterized as a return of capital — not taxed as ordinary income, but reduces the holder's cost basis. Relevant for Strategy because pref dividends paid out of capital, not earnings, flow through this regime.
STRK: Strategy's convertible preferred. 8% perpetual coupon, convertible to common at $1,000 strike. The only convertible in the preferred stack; enters Strategy's diluted-share count via the if-converted method.
STRF: Strategy's senior non-convertible preferred. 10% perpetual coupon, no conversion feature. A pure fixed-income wrapper around the BTC stack.
STRD: Strategy's deeply junior preferred. 10% non-cumulative perpetual coupon — if Strategy skips the dividend, it doesn't accrue. Cheapest cost of capital in the preferred stack precisely because the dividend is discretionary.
STRC: Strategy's variable-rate "stretch" preferred. Monthly dividend, with the coupon allowed to move ±25 bp per month plus Fed-policy moves, designed to keep the preferred trading near par. Saylor has called this the "iPhone moment" of the preferred stack — a flexible-rate instrument the market has come to want.
STRE: Strategy's newest preferred series. Similar profile to STRF.
Perpetual: A bond or preferred share with a fixed dividend stream and no maturity date — the obligation runs forever, until the issuer calls it or the security converts. All five of Strategy's preferreds are perpetuals. The "BTC ever sold to fund the coupon" math on the BTC-cost page only makes sense because of this perpetual structure.
Accretive vs. dilutive: A share issuance is accretive when each existing common share ends up with more Bitcoin behind it after the raise than before. For common-stock issuance, the test is mNAV > 1. Dilutive is the opposite: common issuance below NAV reduces sats-per-share. Preferred issuance is structurally outside this framing — it doesn't dilute common, period.

The bottom line

One sentence

As long as Strategy can raise capital above the per-share BTC value, every issuance makes existing shareholders richer in sats. The rest of this site proves that's what's happening — one 8‑K at a time.

The dollar value of your shares rides on Bitcoin's price. The sat value rides on the machine. One is the market's mood; the other is the balance sheet. Track both, but lead with sats.

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