Cerebras Systems has just printed its August 12 earnings — and while shorts have begun trimming in the immediate aftermath, the borrow market remains one of the most constrained in the market.
The most notable shift since the pre-earnings notes is on the short side. Short shares outstanding have fallen about 6.5% over the past week to roughly 12.6 million — the clearest reduction in positioning since early July. The daily move on August 11 alone was a 5.4% drop, suggesting at least some bears covered ahead of or into the print. That said, this is a trim, not a capitulation: the one-month trend is still up 16%, meaning shorts built materially through July and have only just begun unwinding.
The borrow picture remains extreme despite the short reduction. Availability is running at just 0.6% — effectively one share available for every 165 already lent out. That is slightly looser than the 0.5% reading from the prior session, but the week-on-week tightening is 63%, compressing from roughly 1.7% a week ago. The lending pool is as close to fully exhausted as it can practically get. Borrowing costs have eased from the intra-week spike — the rate hit 2.7% on August 7 before pulling back to 2.1% — but the directional trend over the month is still up 13%. For any bear looking to add exposure after the print, the mechanics are punishing: thin availability and a rising cost to borrow make fresh short entry genuinely difficult.
Options positioning has turned slightly more cautious following earnings. The put/call ratio is running at 0.79, about one standard deviation above its 20-day average of 0.71 — not an extreme reading, but nudging toward the defensive end of its recent range. The 52-week high on the PCR is 0.92, so there is room for more hedging activity to develop if the reaction to the print disappoints. The ORTEX short score of 68 has been essentially flat all week, meaning the algorithmic read on the bearish setup has not meaningfully shifted in either direction — a sign the data inputs are broadly stable rather than inflecting.
The Street has been constructive heading into this print. Mizuho raised its target to $310 in late July, and UBS lifted to $320 following the June quarter. Most active coverage is clustered in the Buy/Outperform camp, with Morgan Stanley carrying an Overweight at $273 and Needham reiterating at $300. The sole dissent on recent record is a Hold initiation from Freedom Capital Markets at $209, well below where the stock is trading at $234.76. The mean target across the covering group is $292 — roughly 24% above current levels, though that consensus was formed before today's print and will likely shift. The bull case centres on dominance in fast inference and the OpenAI relationship; the bear case is the same as it has always been — over 80% of historical revenue from two customers, with the transition to cloud services requiring heavy capital deployment.
Ownership structure keeps the float tight for structural reasons. FMR holds nearly 13% of shares. CEO Andrew Feldman holds over 6%. Benchmark and Foundation Capital together control another 12%. With that concentration of long-term holders and a lending pool running on fumes, the mechanical conditions for a short squeeze are present — though the June earnings reaction, when the stock dropped 18.8% the following day before recovering most of the loss within a week, is a reminder that the setup does not always resolve in the longs' favour.
The number to watch now is whether short covering accelerates or stalls in the sessions following the print — availability at 0.6% means any meaningful new short demand will collide with a near-empty pool, while any sustained covering could release some of that pressure and let the borrow market breathe again.
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