Public companies now hold more than 1.2 million BTC and 6.5 million ETH in corporate treasuries, concentrations that did not exist three years ago. Two firms — Strategy Inc. (MSTR) with 843,738 bitcoin and Bitmine Immersion Technologies (BMNR) with 5.39 million ether — together control roughly 4%...
"We expect bitcoin to go up more than the S&P 500 over time." — Michael Saylor, Executive Chairman, Strategy Inc. (CNBC, May 21, 2026)
Public companies now hold more than 1.2 million BTC and 6.5 million ETH in corporate treasuries, concentrations that did not exist three years ago. Two firms — Strategy Inc. (MSTR) with 843,738 bitcoin and Bitmine Immersion Technologies (BMNR) with 5.39 million ether — together control roughly 4% of each asset's circulating supply. Both trade at or below net asset value as of late May 2026, a condition that undermines the capital-raising mechanics on which the entire model depends.
The digital asset treasury (DAT) sector added approximately $96 billion in bitcoin and $22 billion in ether during the past 12 months. Yet the structural risks are compounding: convertible debt maturities, share dilution at depressed valuations, and unrealized losses that reached $12.54 billion at Strategy alone in Q1 2026. This report compares the two dominant models — BTC accumulation via leveraged equity issuance and ETH accumulation via staking yield — and examines whether the NAV premium mechanism that funded the sector's growth has permanently broken.
As of May 26, 2026, approximately 160 publicly traded companies hold bitcoin on their balance sheets, with aggregate holdings of 1,215,993 BTC, according to BitcoinTreasuries.net. A smaller cohort of 36 companies holds a combined 6.58 million ETH. An additional 17.6 million SOL sits in corporate treasuries, though that market remains thinly tracked.
The concentration is extreme. Strategy alone accounts for 69.4% of all corporate-held bitcoin. Bitmine accounts for approximately 82% of all corporate-held ether. This level of single-entity dominance introduces systemic risk: a forced liquidation by either firm would constitute a supply shock in the respective asset's market.
Total corporate crypto treasury value — across BTC, ETH, and other assets — exceeds $180 billion, up from roughly $45 billion at the start of 2025. The growth was funded predominantly through equity issuance (at-the-market programs) and convertible debt offerings.
| Metric | Strategy (MSTR) | Bitmine (BMNR) | |---|---|---| | Primary Asset | BTC | ETH | | Holdings | 843,738 BTC | 5.39M ETH | | Value (approx.) | $64.1B | $11.5B | | % of Circulating Supply | ~4.0% | ~4.47% | | Avg. Cost Basis | $75,537/BTC | Not disclosed | | mNAV (May 2026) | ~0.94x | ~0.80x | | Exchange | NASDAQ | NYSE |
Strategy, formerly MicroStrategy, holds 843,738 bitcoin as of its May 18, 2026 SEC 8-K filing. The total acquisition cost stands at approximately $63.87 billion, or $75,537 per coin. At bitcoin's current price near $76,000, the portfolio's market value is approximately $64.1 billion — a thin margin above cost basis.
The firm's capital-raising model relies on issuing equity at a premium to its bitcoin NAV, using proceeds to buy more bitcoin, thereby increasing BTC-per-share. When the mNAV traded above 2.0x in late 2024, this flywheel operated with strong accretion. As of May 25, 2026, the mNAV sits at approximately 0.94x — meaning the market values Strategy at a discount to the bitcoin it holds.
On May 26, 2026, Strategy retired $1.5 billion in aggregate principal of its 2029 convertible notes for approximately $1.38 billion in cash — an 8% discount to par, according to a company press release. This reduced total convertible debt outstanding from $8.2 billion to $6.7 billion. Cash reserves fell to $871 million following the transaction. The company reported a BTC Yield of 0.7% and a BTC Gain of 4,391 bitcoin from the debt retirement.
During the Q1 2026 earnings call, Saylor signaled Strategy could sell bitcoin to fund dividend obligations — a departure from his long-standing "never sell" position. He later clarified the remarks were intended to "inoculate the market" and target short sellers, according to Fortune. Regardless of intent, the statement introduced narrative risk for a stock whose thesis depends on uninterrupted accumulation.
Bitmine Immersion Technologies, led by Fundstrat co-founder Tom Lee, announced on May 25, 2026 that its ether holdings reached 5.39 million ETH, with total crypto and cash holdings of $12.3 billion. The company purchased 111,942 ETH for $237 million during the week ending May 25, its largest weekly acquisition of 2026, according to CoinDesk.
Bitmine's thesis differs structurally from Strategy's. Where Strategy holds a non-yielding asset and relies on NAV premium for returns, Bitmine stakes its ether through MAVAN (Made in America Validator Network), its proprietary staking infrastructure. As of May 25, 4.71 million ETH — approximately 87% of holdings — was staked, generating a projected $276 million in annualized staking revenue at a 2.75% yield, per company filings.
Lee stated at Consensus 2026 in Miami that the firm expected to reach its target of 5% of ether's circulating supply later in 2026. He noted: "We continue to expect a supercycle ahead for crypto and ethereum," citing Wall Street tokenization and agentic AI as demand drivers, according to news.bitcoin.com.
BMNR stock uplisted to the NYSE in April 2026 and trades at approximately $19.09 as of May 26, representing an mNAV of roughly 0.80x — a 20% discount to the net asset value of its ether holdings.
The DAT sector's core economic engine is the NAV premium. When a company's stock trades above the value of its crypto holdings, it can issue shares accretively — each dollar raised buys more than a dollar of crypto per existing share. When the premium compresses below 1.0x, issuance becomes dilutive.
Historical data illustrates the severity of the shift. Metaplanet's mNAV fell from 9.9x in February 2025 to 0.9x by October 2025, according to NYDIG research. Strategy's mNAV declined from 2.1x to 1.2x over the same period. Bitmine's mNAV dropped from 2.3x to 1.3x. By May 2026, both Strategy (0.94x) and Bitmine (0.80x) trade below NAV.
This has direct operational consequences. Strategy paused bitcoin purchases during the week of its debt retirement. Bitmine, despite its large May 25 purchase, had earlier indicated it would slow accumulation. When shares trade below NAV, every new share sold to buy crypto destroys value for existing shareholders.
The Motley Fool and Nasdaq published parallel analyses in February 2026 predicting this outcome, noting that "the premium era is over" and that DATs would need to find alternative sources of value creation beyond raw accumulation.
Strategy's outstanding convertible debt stands at $6.7 billion following the May 26 retirement. These instruments carry conversion features that, if triggered, add shares to the float. The company's at-the-market (ATM) equity program has been its primary funding mechanism, but issuing stock at 0.94x NAV is extractive rather than accretive.
According to Skadden, Arps in a February 2026 analysis of DAT capital structures, the sector's debt instruments follow standard corporate finance forms — convertible notes, ATM equity offerings, and preferred stock — but the underlying collateral (volatile crypto assets) introduces unique risks. A sustained decline in asset prices can create a "death spiral" dynamic: falling stock prices force issuance at worse terms, diluting shareholders, which further depresses the stock.
Strategy addressed this directly by retiring debt at a discount. The $120 million savings ($1.5 billion par vs. $1.38 billion cash) provides marginal relief. But $6.7 billion in convertible debt remains outstanding against $871 million in cash and a bitcoin portfolio whose value fluctuates billions of dollars weekly.
Bitmine's capital structure is less leveraged. The firm's total crypto and cash holdings of $12.3 billion include both ether and bitcoin positions. Its staking revenue — $276 million projected annually — provides a cash-flow stream that Strategy lacks entirely.
Metaplanet (TSE: 3350) holds 40,177 BTC as of May 23, 2026, valued at approximately $3.0 billion. The Tokyo-listed company acquired 5,075 BTC in Q1 2026 at an average price of $79,900 and targets 100,000 BTC by year-end under its "555 Million Plan." Metaplanet benefits from yen depreciation against dollar-denominated bitcoin.
Twenty One Capital (NYSE: XXI) holds 43,514 BTC, making it the second-largest corporate bitcoin holder. On May 20, 2026, Tether purchased SoftBank Group's entire 89.1 million-share stake, consolidating control of the entity, according to Bloomberg. Tether has proposed merging XXI with Strike (payments) and Elektron Energy (mining) to create a vertically integrated bitcoin operation.
MARA Holdings (NASDAQ: MARA) reports approximately 38,689 BTC. The mining firm funded acquisitions through a $700 million convertible note offering. Smaller players like Semler Scientific hold 1,273 BTC — material relative to the firm's size but negligible in market context.
The DAT model redistributes economic value along a specific chain: shareholders provide capital (via equity dilution or debt), which flows to crypto markets (as buy pressure), then accrues to insiders (via management fees, compensation, and stock-based awards) and crypto ecosystems (as staking deposits or simply held supply).
When mNAV exceeds 1.0x, all participants benefit. The issuer raises more capital per bitcoin acquired. Existing shareholders see their BTC-per-share increase. Markets absorb sustained buy-side demand.
When mNAV falls below 1.0x, the value chain inverts. New issuance dilutes existing holders. The company's acquisition cost exceeds the market's implied value of the acquired asset. Management continues to collect compensation regardless. The economic benefit flows from shareholders to the asset itself (as buy pressure) and to management — not back to shareholders.
Bitmine's staking yield introduces a partial offset. At $276 million annually on a $12.3 billion asset base, the yield is approximately 2.2% — below the risk-free rate in most developed markets. It reduces, but does not eliminate, the dependency on NAV premium for value creation.
Strategy's debt retirement represents a different kind of value creation: reducing liabilities at below-par prices. The $333 million in implied BTC Gain from the transaction demonstrates that liability management can substitute for accumulation when market conditions are unfavorable.
The corporate crypto treasury model is entering its stress-test phase. The sector added roughly $118 billion in crypto assets over the past 12 months, funded primarily through equity dilution and convertible debt. That capital-raising mechanism functioned when stocks traded at multiples of NAV. It does not function at 0.8–0.94x.
Strategy's pivot toward debt retirement — buying back $1.5 billion in bonds at 92 cents on the dollar — acknowledges this reality. Bitmine's staking infrastructure represents the most credible attempt to generate operating cash flow from a crypto treasury. Neither model has resolved the fundamental question: whether holding a volatile, non-productive asset (or a modestly productive one, in ether's case) on a corporate balance sheet creates durable shareholder value, or merely creates a leveraged tracking instrument that could be replicated more cheaply through an ETF.
The next 12 months will clarify the answer. Strategy's $6.7 billion in outstanding convertible debt, Bitmine's approach to the 5% ether supply threshold, and the sector-wide NAV discount will determine whether digital asset treasuries mature into sustainable institutions or remain a cyclical artifact of the 2024–2025 premium era.