IREN Short Interest Climbs to 32% as Index Deletion Looms

IREN is caught between two forces heading into its November 6 earnings: a short position that has grown to its heaviest level in over a month, and a pending MSCI index reshuffle that could force hundreds of millions of dollars of selling through index trackers before year-end.

The lending picture has not materially improved since last week's note. Availability is at 5.8%, meaning roughly one share remains available for every seventeen already borrowed. That is a fraction looser than the 5.1% recorded on October 14, but the pool has been pinned below 10% for most of the past fortnight, briefly touching 23.9% on October 5 before snapping back. Short interest has kept climbing through that period. Bears now hold 90.7 million shares, equivalent to 32% of the free float, up 9.4% on the week and the highest level since early September. Borrow cost has moved modestly higher to 0.93%, though it remains low in absolute terms, telling you that cost is no deterrent to holding the position. Options traders are not amplifying the bearish signal: the put/call ratio of 0.69 is barely a rounding error above its 20-day average, nearly flat on a z-score basis, suggesting call activity is keeping pace with put demand even as the stock falls. The aggregate picture is one of persistent, building short conviction rather than a panicked trade.

The Street remains structurally bullish but has quietly trimmed its sails. The mean analyst price target of $77.81 implies roughly 190% upside from the current $26.62 close, a gap so wide it reflects the stock's sharp 43% decline over the past month rather than any sudden analyst capitulation. The most recent move came from B. Riley Securities at the end of September, trimming its target from $96 to $91 while holding its Buy rating. JPMorgan had upgraded the stock to Overweight in mid-September, raising its target to $65 from $46, a call that already looks uncomfortable given where the share price has since traded. The bull case centres on IREN's vertically integrated AI infrastructure model, with roughly $4 billion of GPU-as-a-service run-rate revenue and 2026 capacity described as sold out. Bears focus on execution risk: the pivot from bitcoin mining to AI cloud services depends on scaling a GPU fleet, securing power, and avoiding facility delays, any of which could cause cost overruns. The EV/EBITDA multiple has compressed sharply, down 0.32 turns over the past month to 2.3x, reflecting how much the market is discounting those forward estimates.

The most structurally notable development this week sits in the index rebalance data. ORTEX puts the probability of IREN being deleted from the MSCI World, MSCI USA, MSCI North America, and MSCI Kokusai indices at 96% each, with the announcement expected on November 11 and the trade date November 30. Combined forced selling across those indices could reach $553 million for MSCI World alone, roughly half a day of normal trading volume. At the same time, ORTEX forecasts a 95% chance of addition to the MSCI USA Small and MSCI World Small indices, generating estimated buying of $369 million and $184 million respectively. The exit line that keeps IREN in the large-cap indices is $36.48, currently 37% above where the stock is trading. The stock's current market cap of $10.9 billion would need to recover to $15.0 billion to flip that call. These are the index mechanics as they stand, not a price target.

Institutional ownership data, last updated to end-September, shows Goldman Sachs held 9.4% of the class as of its August 13D filing, the largest declared position on the register. Bank of America disclosed 5.8% in August. Kenneth Griffin's position has slipped from 5.0% to 4.7% as of the September filing. All 13D/G stakes are event-driven disclosures around the 5% threshold, and holders dropping below that level may not file again. The co-CEOs, William and Daniel Roberts, each received equity grants in July, though those are compensation awards rather than discretionary purchases and carry limited signalling weight. No open-market buying has been recorded from insiders in the available data.

The stock has sold off sharply after each of its two most recent earnings prints, dropping 8.4% and 10.4% on the day, before recovering partially over the following five days. With results due November 6, five days before the expected MSCI announcement, the sequencing of those two events is the clearest near-term focal point for anyone watching the name.