Nebius Group is caught between a rapidly unwinding short position and a peer group in freefall, creating an unusual divergence that defines the week's setup.
The short-covering story — already the headline earlier this week — has continued to develop. Short interest has dropped 12.9% on the week to 24.4% of the free float, down from roughly 63 million shares in early August to 53 million now. That is still a heavily shorted name by any measure, but the direction of travel is unambiguous. The borrow market tells the same story in starker terms: availability has jumped from near-zero — multiple sessions this month saw availability below 5%, with the lending pool essentially exhausted — to 43.7% now, a gain of over 800% on the week. Cost to borrow has collapsed from 1.77% on August 20 to just 0.81%, the lowest reading in the 30-day window. The short score, while still elevated at 69.2, has eased from 70.3 a week ago, consistent with the broader retreat in bearish positioning.
Options traders are reading this differently from the short sellers. The put/call ratio has fallen to 0.88, more than a full standard deviation below its 20-day mean of 0.93, and well clear of the defensive posture that dominated in late July — when the PCR ran above 1.25 for an extended stretch. The shift is notable: as shorts cover, options participants are leaning into calls rather than hedging with puts. That is a bullish signal in positioning terms, even against a week that saw the stock fall 4.5% to $209.18.
The Street has moved decisively in one direction since the August 12 earnings print, which delivered a +32% single-day move. Citigroup lifted its target to $324 from $278 while keeping a Buy rating. Baird raised to $340 from $250, maintaining Outperform. DA Davidson — the dissenting voice — held Neutral and raised its target modestly to $250 after earlier cutting it, reflecting the tension between Nebius's momentum and its capital-intensity. The mean analyst target of $286.69 implies roughly 37% upside from current levels. Bulls point to the vertically integrated AI infrastructure model and a marquee client roster. Bears flag hyperscaler competition, the heavy capex burden, and residual geopolitical overhang from the company's Yandex lineage. EV/EBITDA has compressed 1.3 turns over the past month to 13x — the stock's re-rating is running faster than the Street is adjusting targets.
The institutional ownership picture adds an important layer. Goldman Sachs added over 13 million shares in the most recent reporting period, making it the second-largest institutional holder at 8.3% of shares. Bank of America added nearly 4.7 million shares; Invesco added 5.7 million; Lone Pine initiated a fresh 4.3 million-share position. The accumulation is broad-based and recent. Against that, the Chairman of the Board and a Director sold a combined ~$7 million of stock on August 14 at prices around $265–$278 — well above the current $209.18. Those sales were at significantly higher prices, and the stock has since pulled back, which frames the insider activity as opportunistic trimming at the post-earnings high rather than a structural exit.
The earnings history is worth noting. The August 12 print drove a 32% single-day gain and held about half of that over the subsequent five days. The prior earnings event in July produced a 21% single-day loss before recovering 20% over five days. Volatility around results is extreme in both directions. The next event is scheduled for November 12.
Peer performance this week is the clearest near-term risk flag. IREN fell 15.4% on the week and 12.5% on Friday alone. CORZ dropped 7.3%. CIFR fell 3.8%. Every correlated name in the peer group closed the week lower, and Friday's broad selloff across crypto-adjacent compute names — down 6–12% in a single session — did not spare NBIS, which fell 4.3% on the day. The question heading into next week is whether the short-covering that has been the dominant theme holds, or whether the peer group's deterioration bleeds further into a name where 24% of the float remains on the short side.
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