NBIS Retreats 15% as Short Covering Stalls and the Street Holds Its Nerve

Nebius Group closes the week in an uncomfortable spot — the stock has given back 15% in five sessions, yet the short-covering trend that defined the prior note has essentially frozen, leaving 20.6% of the float still short and the next earnings print ten weeks away.

The short-side story has gone quiet after a dramatic run. Last Thursday's note flagged a decisive 15% week-on-week decline in short interest, from ~53 million shares to 44.9 million. This week, the number barely moved — 44.9 million shares remain short as of September 15, a change of less than 0.2% on the day. The covering wave that compressed the position from a peak of 63 million in early August appears to have run its course, at least for now. What's changed more noticeably is the borrow environment. Availability has loosened sharply — from 41.8% a week ago to 75% today — as the covering demand that had absorbed supply dried up. Cost to borrow has dropped with it, falling 24% on the week to 0.57%, half the level it was in late August. The ORTEX short score eased slightly to 67.9 from 68.6, a gentle drift rather than a directional break. The lending market is no longer tight; it's becoming comfortable for anyone wanting to initiate or maintain a short position.

Options traders are mildly more cautious than usual, but not dramatically so. The put/call ratio edged to 0.94, fractionally above its 20-day average of 0.92 and less than one standard deviation above the mean. That's a far cry from the 1.3 reading that marks the 52-week high. The signal here is one of low conviction rather than genuine alarm — hedging activity has ticked up in line with the price decline, but the options market isn't pricing a panic.

The analyst community is a sharper counterpoint to the week's price action. Truist Securities initiated coverage on September 9 with a Buy and a $355 target, the most recent addition to a coverage list where bulls outnumber bears three to one. Citigroup raised its target to $324 after the August earnings beat. Baird went to $340. The mean target across the panel is $291, which implies roughly 40% upside from Tuesday's close of $207. The holdout is DA Davidson, whose Neutral stance with a $250 target reflects the bear case clearly: heavy capital intensity, GPU supply concentration through NVIDIA, and near-term margin uncertainty as Nebius pushes toward 1 GW-plus of annual capacity additions. The bull case centres on the $17 billion Microsoft revenue agreement, a genuine engineering edge in AI infrastructure, and a $2.1 trillion total addressable market by 2030. Neither side has obviously won this argument, but the stock's 25% one-month decline has done something the analysts haven't — it has moved the price back toward the lower end of the range the bears find defensible.

The ownership register adds an important structural layer. NVIDIA Corporation holds 9.3% as a passive 13G filer, Goldman Sachs has amended its position upward to 10.5% — the most recently disclosed figure — and Goldman's asset management arm added more than 13 million shares in the quarter ending July 31. These are not activist positions; no Schedule 13D is on file. But the presence of NVIDIA as a 9%-plus holder and Goldman at 10.5% gives the stock an institutional anchor that limits how far disorderly selling can push it. The disclosure caveat applies: these stakes are as last filed around the 5% threshold, and any holder below that level may not file again.

Earnings history is also worth keeping in mind. The August 12 print produced a one-day gain of 32% and held most of that over five days. The July 28 report went the other way, down 21% on the day before recovering 20% over the following week. The next event is scheduled for November 12. That gives the stock ten weeks to find a new equilibrium — either the short position rebuilds toward August levels on macro or competitive concerns, or the covering resumes as the price dip attracts fresh buyers.

What to watch: whether short interest begins drifting back toward 53 million shares now that borrow availability has reopened, and whether any of the Street's bull-side targets come under formal revision as the stock trades meaningfully below where most of August's upgrades were written.