Nebius Group erupted 19% on Tuesday to close at $216.92, driving what is already the most heavily shorted stock in this coverage universe into an acute pain trade — with 28.6% of the free float short and borrow availability near zero.
The short squeeze dynamic is the clearest story right now. Short interest has barely moved this week, nudging up just 1.5% to 62.4 million shares — the position that built so aggressively in early July (up 39% over the past month) is still intact. Against that, availability has dropped further to 4.7%, down 31% on the week. At that level, roughly one share remains available for every twenty already borrowed. Shorts who want to exit cannot easily find stock to buy in the borrow market to close positions, and new shorts cannot enter cheaply. Cost to borrow has ticked back up to 1.1%, 13% above last week's level — modest in absolute terms but directionally consistent with a tightening pool. The ORTEX short score, steady in the 71-range all week, reflects a structurally high-risk positioning setup regardless of Tuesday's rally.
Options traders, by contrast, turned meaningfully less defensive on the move. The put/call ratio fell to 1.03, roughly 1.4 standard deviations below its 20-day average of 1.13. For context, the same ratio was running at 1.29 in early July — its highest reading of the past year. The sharp drop in put demand on a large up day suggests some hedges were unwound into the rally, rather than new call activity driving fresh bullish bets. The setup is less defensive than it was, but it is not crowded with optimism.
Analyst activity this week adds genuine fuel to the narrative. Baird initiated with Outperform and a $250 target on July 22. Northland Capital raised its target to $410 from $248 while maintaining Outperform. Freedom Capital upgraded to Buy from Hold. Those moves follow a string of post-May earnings upgrades — Citi raised to $287, Citizens to $270, and BofA (which remains a bellwether here) lifted its target to $280 in June. The consensus is Buy, with nine buys against five holds and a mean target of $259. Morgan Stanley is the notable holdout, sitting at Equal-Weight with a $144 target — well below the current price and the rest of the Street. The bull case centres on the $17 billion Microsoft revenue agreement and vertical integration of compute, power, and data centre capacity. Bears point to premium valuation, capital intensity, and hyperscaler competition.
Earnings on July 28 loom over everything. The prior print on May 13 produced a 23% one-day move higher, with the stock adding another 7% over the following week. The April 24 print moved the other way, -8% on the day. A stock with 28.6% short interest, near-zero borrow availability, and a structurally constrained lending pool heading into a binary event is exactly the kind of setup that produced the May rally. Institutional ownership adds another layer: founder Arkady Volozh holds 11.5% of shares, and Situational Awareness LP disclosed a full 4.8% position as recently as May — a concentrated holder base that reduces genuine float further. The Chairman of the Board sold roughly $1.1 million of stock on July 15, spread across multiple tranches, a modest transaction against the broader picture but worth noting.
The number to watch into July 28 is not the short interest level — it is whether availability can recover from 4.7%, or whether the pool stays locked. A locked borrow market heading into a print with this level of short positioning is the condition that produced the May squeeze; whether the print itself is the catalyst or a relief valve depends entirely on what Nebius reports.
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