A bitcoin treasury company is only as powerful as the premium its stock commands over the coins sitting on its balance sheet — and this cycle delivered the model's first real stress test, as that premium briefly flickered out for its largest practitioner. To understand why that single number matters so much, it helps to start with what these companies actually are.
What a treasury company is
A crypto treasury company is a publicly listed business whose primary strategy is to accumulate and hold a crypto asset — overwhelmingly Bitcoin, and increasingly Ethereum — on its corporate balance sheet, funded by issuing equity and convertible debt. The effect is to turn the company's stock into a leveraged proxy for the underlying asset: own the share, and you gain exposure to the coins plus the company's financing engine on top.
The archetype is Strategy (formerly MicroStrategy). Its CEO disclosed this cycle that the company had accumulated roughly 4% of the world's Bitcoin supply [1], and its own accumulation record shows a reserve of 847,363 BTC across 113 purchase events, a position worth about $50.88 billion [2]. That scale is what makes Strategy the reference case for the entire category.
The flywheel and the premium (mNAV)
The model's engine is the premium. When a treasury company's stock trades above the net value of the crypto it holds — a metric the market tracks as mNAV, or multiple of net asset value, greater than 1 — the company can issue new shares at that premium and convert each dollar raised into more than a dollar of coins. More coins per share raises the asset backing, which can support the premium, which funds the next raise. That is the flywheel.
The catch is symmetrical: the same premium that powers the flywheel is also the model's single point of failure. When mNAV falls below 1, the stock trades at a discount to the coins it holds, new equity raises become dilutive rather than accretive, and the flywheel runs in reverse.
The stress test this cycle
This cycle is the first time that failure mode showed up at the top of the category. Strategy's enterprise mNAV fell below 1, erasing its long-standing Bitcoin premium and leaving the stock at a discount to its own holdings [3]. The company halted Bitcoin purchases as cash reserves fell 38% to about $0.87 billion and dividend coverage compressed from more than seven years to roughly 14 months [4]. Independent research walked through how a falling Bitcoin price strains the company's capital stack and liquidity [5][6].
The raw numbers framed the strain. With Bitcoin around $61,000, reporting put Strategy roughly $14 billion underwater on paper, while its STRC instrument traded about 26% below par [7]. The company's average accumulation cost of $75,653 sat above a spot price near $60,236 — meaning the stack was underwater on a cost basis, not above it [2]. Management publicly reaffirmed its long-term, Bitcoin-focused capital strategy through the drawdown [8][9][10], and an equity research firm lowered its valuation estimate on the stock, citing a lower Bitcoin forecast [11]. There were also fears, reported during the week, that forced selling from a large treasury holder could spill into the broader market [12].
Beyond Bitcoin: the Ethereum cohort
The same template has migrated to Ethereum. Bitmine, led by Tom Lee, staked 160,480 ETH in a single move to bring its staked total to 4.88 million ETH — about 86% of its portfolio — and has accumulated roughly 4.58% of the ETH supply [13][14]. SharpLink bought 10,000 ETH for $16.1 million to reach 886,725 ETH in treasury, while raising $75 million in capital and repurchasing shares [15]. The ETH cohort imports the same premium mechanics — and the same fragility: the cycle's drawdown left BitMine roughly $10 billion underwater on its Ethereum position [7].
The sovereign variant — and the pipeline
Not every treasury holder depends on an equity premium. El Salvador continued adding to its national reserve, reaching 7,696.37 BTC (about $461 million) — a state-level treasury that accumulates without the share-issuance flywheel, and therefore without the mNAV vulnerability [16]. Meanwhile the pipeline of new vehicles kept forming: Cantor Equity Partners postponed to July 2 a shareholder vote on its merger with the Adam Back-led Bitcoin Standard Treasury Company [17].
The durable takeaway
Strip away the headlines and the treasury-company model comes down to one mechanism: it converts a public stock into a leveraged, premium-funded bet on a single asset. The premium is both the engine and the exposure. While mNAV stays above 1, the flywheel compounds; when it slips below 1 — as it did at the top of the category this cycle — the model's defining strength becomes its defining vulnerability. That is the lens to keep handy as more of these vehicles list, across both Bitcoin and Ethereum: watch the premium, because it tells you whether the flywheel is spinning forward or grinding into reverse.
