Grouping $MSTR, $COIN, $MARA, and IBIT into a single "Bitcoin-linked equities" bucket loses most of what the filings actually say. Each ticker answers a different research question. Treating them as interchangeable Bitcoin beta means applying the wrong framework to three of the four, and probably all four.

The macro backdrop as of late May 2026 makes the distinction sharper. Bitcoin dominance sits at 57.7% of total crypto market capitalization, meaning the tape is Bitcoin-led rather than altcoin-driven. The crypto Fear and Greed index reads 23, classified as extreme fear. Bitcoin's 30-day realized volatility is running at roughly 26.5% annualized, a calm regime by historical standards. Equity volatility, measured by the VIX, closed at 16.7. That combination puts Bitcoin-linked equities in a period where the underlying asset is relatively stable but sentiment is deeply negative. In that environment, the differences between these four structures matter more, not less, because each one transmits the macro differently.

MSTR Is a Financing Machine, Not a Software Company

Strategy's research case has almost nothing to do with its software business. The dominant variable is Bitcoin-per-share: how much BTC the company holds relative to its diluted share count, and whether management can continue accessing capital markets at terms that are accretive to that ratio. The 10-K filed February 19, 2026 showed 8 added and 2 materially changed Item 1A risk factors compared to the prior year filing, a disclosure cadence that reflects the complexity of running a leveraged Bitcoin treasury inside a public company wrapper.

$MSTR's 30-day price performance through May 27 was down roughly 9%, while the 90-day figure was up about 16%. That divergence is characteristic of a high-leverage structure: it amplifies Bitcoin moves in both directions and adds its own financing-related volatility on top. The stock's 30-day realized volatility of 72% annualized is nearly three times Bitcoin's own realized volatility over the same window. An investor in $MSTR is not buying Bitcoin exposure at 1:1. They are buying a leveraged, financing-dependent claim on Bitcoin accumulation, with all the capital structure risk that entails.

The filing questions that matter for $MSTR are: what is the current BTC-per-share, what is the cost and maturity profile of the convertible debt stack, and is the ATM equity program still accretive to Bitcoin accumulation per share. Operating revenue and margins are secondary.

COIN Is an Operating Business With Bitcoin as a Revenue Driver

Coinbase reported $1.41 billion in revenue for the latest quarter. That number is the starting point for any serious $COIN analysis, and it has nothing to do with how much Bitcoin Coinbase holds on its own balance sheet. The revenue flows through transaction fees, subscription and services income, and custody arrangements. Bitcoin price matters because it affects trading volumes and the dollar value of fee-generating activity, but the operating model has its own dynamics that are independent of Bitcoin's spot price on any given day.

$COIN's $COIN 10-K filed February 12, 2026 showed 8 added, 8 removed, and 8 materially changed risk factors compared to the prior year, the highest rate of risk-factor change across the four tickers examined here. That density reflects regulatory exposure, competitive pressure in the exchange business, and the complexity of operating a global crypto financial services platform. None of those risks are Bitcoin price risks in the direct sense.

$COIN's price is down roughly 27% year-to-date through May 27, underperforming both $MSTR and $MARA over the same period. The stock trades below its 20-day, 50-day, and 200-day moving averages. That performance gap relative to $MARA is particularly telling: a miner with direct production leverage to Bitcoin recovered sharply while the exchange operator did not. The divergence points to operating-specific headwinds at $COIN that are not captured by Bitcoin price alone.

For $COIN, the relevant questions are revenue mix between transaction and services income, user growth and retention, and how the regulatory environment is affecting product expansion. Bitcoin price is an input, not the answer.

MARA's Leverage Is Operational, Not Financial

Marathon Digital's 28% one-month price gain through May 27 is the most dramatic move in this group over that window. The 90-day gain is roughly 70%. That kind of performance reflects miner operating leverage: when Bitcoin price recovers from a trough, miners with low-cost production and significant installed capacity see their economics improve faster than the underlying asset because the fixed cost base stays roughly constant while revenue per BTC mined rises.

The questions that drive $MARA's research case are production volume, energy cost per BTC mined, fleet efficiency, and how the post-halving revenue environment is resolving. $MARA's 10-K filed March 2, 2026 showed 8 added, 8 removed, and 8 materially changed risk factors, a high rate of change that reflects the operational complexity of running large-scale mining infrastructure. The risk-factor activity at $MARA is about physical operations, energy contracts, and regulatory treatment of mining, not about capital markets access or exchange licensing.

$MARA's 30-day realized volatility of roughly 67% annualized is comparable to $COIN's, but the source of that volatility is different. $COIN's volatility is driven by revenue sensitivity and regulatory news. $MARA's is driven by the combination of Bitcoin price moves and production economics. Same volatility number, different underlying machinery.

IBIT Is the Clean Exposure, and That Is Both Its Strength and Its Limit

IBIT is a spot Bitcoin ETF. Its filing context is fund reporting, not operating-company reporting. There are no insider transactions to analyze, no revenue mix to model, no debt stack to stress-test. The NAV tracks Bitcoin price, the expense ratio is the cost of that tracking, and the relevant filing questions are AUM, flows, and whether the fund mechanics are operating as disclosed.

IBIT's 30-day realized volatility of roughly 30% annualized is the lowest in this group by a wide margin, sitting close to Bitcoin's own realized volatility rather than amplifying it. That is the point. An investor in IBIT gets Bitcoin exposure without the leverage of $MSTR, the operating risk of $COIN, or the production economics of $MARA. The IBIT 10-K filed February 27, 2026 showed only 1 materially changed risk factor compared to the prior year, the lowest rate of material change across the four tickers. Fund mechanics are stable. The risk is Bitcoin price, full stop.

IBIT's year-to-date performance of roughly negative 17% through May 27 is the cleanest read on what Bitcoin itself has done over that period. $MSTR's near-flat YTD performance despite holding Bitcoin reflects the offsetting effects of leverage and dilution. $MARA's 45% YTD gain reflects miner operating leverage. $COIN's 27% YTD decline reflects operating-specific pressure. IBIT is the control case.

The Other Reading

A reasonable counter-argument is that in a sharp Bitcoin drawdown, all four tickers sell off together regardless of their structural differences, making the categorical distinctions less useful in practice. The price data offers partial support: all four show long-term downtrends as of May 27, and all four experienced meaningful declines over the prior six months. In a risk-off crypto environment, correlation across the group rises.

That observation is real but does not collapse the analytical case for category-specific frameworks. Correlation during drawdowns tells you about short-term price behavior. The filing-level questions, what drives each company's long-term economics, how each transmits Bitcoin price stress into earnings and capital structure, and what each management team controls, remain categorically different even when the stocks move together for a week. $COIN's regulatory exposure does not become a Bitcoin price question because both tickers fell in November. $MSTR's convertible debt maturity profile does not become irrelevant because IBIT also declined. The categories are not a market-timing tool. They are a framework for understanding what you own and what would have to change to alter the thesis for each ticker.

The risk-factor diff data reinforces this. $COIN's 8 materially changed risk factors in its latest annual filing reflect a different set of concerns than IBIT's 1. Treating them as equivalent Bitcoin exposure means ignoring the most informative part of the disclosure record.

The four tickers in this group collectively represent the main structural forms that Bitcoin exposure takes in public markets: leveraged treasury accumulation, operating exchange, mining production, and passive ETF wrapper. Each one answers a different question. The investor who knows which question they are asking will read the filings differently, monitor different metrics, and interpret the same Bitcoin price move differently depending on which ticker they hold.

Research only. Not investment advice.