IREN Surges 26% — Bears Trapped Against a Sealed Borrow Pool

IREN is doing something this week that the heavily-entrenched short base has not had to deal with in months: the stock is rallying hard, and there are virtually no shares left to borrow.

The price move is the starting point. IREN closed Friday at $44.68, up 26% on the week and 7.3% on Thursday alone. That puts the stock back above the pre-earnings range where it traded before the August 27 print. Both previous earnings prints produced immediate falls of 10.4% and 8.4%. Bears positioned for that pattern on the last cycle — but the stock has now fully recovered those losses and added more. That is a meaningful shift from the picture described in recent notes, which characterised IREN as caught between entrenched shorts and a wall of analyst optimism the market was openly discounting.

The lending picture makes this rally structurally uncomfortable for bears. Availability — the ratio of shares still available to borrow against shares already out on loan — has been near zero for the better part of a fortnight. It closed Monday at just 0.86%, one of the tightest readings of the past year; the 52-week floor was 0.35%, touched on September 3. With the entire borrow pool sealed, short sellers cannot add to positions even if they want to. The week-on-week tightening in availability is running at roughly 40%. Short interest itself has edged fractionally lower, down 0.4% in one session to 102.7 million shares, still representing 36.2% of the free float — essentially the same entrenched base. Cost to borrow remains modest at 1.17%, up 2.5% on the week, which tells you this is an old, sticky short rather than a fresh panic position. The ORTEX short score has drifted higher to 69.3, ranking in the bottom 6th percentile of the universe — the short-side pressure reading is as elevated as it has been all quarter.

What changed to drive the rally is the more interesting question. Analysts across the board held their ratings this week. After the August 28 earnings reactions, BTIG reiterated Buy at $80, Macquarie held Outperform at $90, Cantor Fitzgerald reiterated Overweight at $99, and Canaccord stayed Buy at $79. The consensus mean target is $76.37, roughly 71% above Friday's close — a gap the market had been dismissing for weeks. The bull case centres on IREN's transition from bitcoin mining to AI cloud infrastructure, with grid-connected land in renewable-rich regions and a Microsoft partnership as anchors. Bears counter that the transition away from supporting Bitcoin miners is taking longer than expected, competitive pressure from larger hyperscalers is real, and supply-chain bottlenecks on power equipment remain unresolved. The EV/EBITDA multiple has compressed meaningfully — down roughly 0.43x over 30 days to 3.6x — suggesting the market is paying less for each unit of earnings power even as revenue expectations build. The factor scorecard captures the tension cleanly: analyst recommendation differential ranks in the 96th percentile (the Street is firmly bullish) while the short score rank sits in the bottom 6th percentile (lending-market pressure is near maximum).

Institutional positioning adds another layer. Goldman Sachs filed a fresh Schedule 13G in August disclosing a 9.4% passive stake — 33.6 million shares. Bank of America filed its own 13G the same month showing 5.8%. Both are recent, first-time filings on this name, and together they represent a meaningful accumulation of stock on the long side by two of the largest dealers in the market. As always with 13D/G disclosures, these are event-driven filings around the 5% threshold and reflect ownership as last disclosed — positions can change without a follow-on filing if holdings drop below that level. The co-CEOs, Daniel and William Roberts, received large share grants in July (transaction code A — compensation awards, not open-market purchases), adding 9.1 million shares each, while no open-market buying or selling has been recorded in the 90-day window.

Peer context confirms this is a sector-wide move rather than an IREN-specific story. HUT is up 17.8% on the week. CIFR and RIOT both gained roughly 15–17%. WULF, CORZ, and CLSK added 7–9%. IREN is outpacing even the strongest peers, which may reflect its higher short base creating amplified upside when a sector bid arrives — a classic dynamic when 36% of float is committed short and the borrow pool has no room to absorb new supply.

The next earnings event is scheduled for November 6. Between now and then, the question worth tracking is whether the borrow pool loosens enough to allow fresh short positioning to rebuild — or whether availability stays sealed, keeping the squeeze dynamic intact as the sector rally continues.