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BMNR, the bitcoin immersion-cooling miner, sits in an awkward spot heading into the week: short interest is near a month-high, borrowing costs have risen sharply, yet the lending pool remains loose enough to suggest the bear thesis is disciplined rather than desperate.
Short positioning is the most pressing data point on this stock right now. At 16.5% of the free float, short interest is elevated and has climbed roughly 3.8% over the past week, even as it drifted a fraction lower on the final session of the period. The history shows a clear pattern: SI ran above 50 million shares in early September before retreating, then rebuilt through late September to hold in the high 40-million-share range. That rebuilding phase corresponds with bears reloading after a partial squeeze, not fresh conviction from new shorts. The ORTEX short score has ticked up to 54.9, close to the top of its recent range, which corroborates the view that pressure is building incrementally.
The lending market tells a more nuanced story. Borrow availability has tightened meaningfully in the past week, dropping around 17% to 178.6%. In absolute terms that still means roughly 1.8 shares are available to borrow for every one currently lent out, well within a comfortable range and far above the 52-week tightest level of 48.8%. The cost to borrow, while rising fast on a percentage basis (up 29% week-on-week to 0.47%), remains negligibly low in absolute terms. In practice, there is no squeeze pressure in the lending market today. Bears can still get access to shares cheaply. What the tightening does signal is a directional shift: demand for borrows is growing faster than supply.
Options traders are broadly neutral. The put/call ratio at 0.44 barely moves from its 20-day average of 0.43, and the z-score of 0.37 points to no unusual hedging activity in either direction. The 52-week range on the PCR runs from 0.32 to 0.62, and the current reading lands squarely in the middle. There is no options signal here amplifying the short-side story, nor one contradicting it. The call side continues to dominate volume, consistent with a stock where retail momentum and crypto-price sensitivity draw speculative call buyers.
The institutional register adds a layer of complexity. BlackRock added over 16 million shares in its most recent disclosure, and State Street added 6.4 million. FMR added more than 7 million. Those are material inflows from passive and active managers. Against that, MOZAYYX UGP filed a Schedule 13D in July 2025 holding a 9.99% stake, making it a declared activist on the register. Peter Thiel, who filed a 13G alongside the initial activist disclosure, has since cut his position from 9.1% to 0.9% per a November 2025 amendment. Stakes at these levels are as-last-disclosed and holders below 5% may exit without further filing, so the precise current picture is uncertain. The contrast between large passive inflows and a significant founder-adjacent stake reduction is the most underappreciated tension in the ownership structure.
The company's next earnings event is slated for 20 November. The prior two quarterly results produced next-day moves of plus 7.7% and plus 8.1%, with the five-day drift adding further gains in both cases. The April report was a near-flat event on day one, though the five-day window produced a 6.7% gain. The pattern is skewed positive on the day of results, which matters given where short interest is parked. How the short base responds to the next print, and whether the activist position remains intact above its last-disclosed level, are the two threads most worth tracking from here.
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Open BMNR on ORTEX →ORTEX Market Intelligence content is generated by AI from a snapshot of ORTEX's proprietary data and reviewed by the ORTEX team. Content is informational only and does not constitute investment advice.
