Bears Circle AI and Nuclear Plays

Short sellers made big moves this week. CBRS (Cerebras Systems) saw the biggest jump — SI % of FF rocketed to 25.5%, up from just 6.3% a week ago. That's a 19 percentage point surge in days. Bears are clearly skeptical of the AI chip hopeful's valuation.

Nuclear energy play OKLO tells the opposite story. SI fell 21.5% in a week to 16.4% of free float. Availability has tightened to just 23%, signalling short covering and growing squeeze risk.

HTZ (Hertz) sits at 43.7% SI — one of the highest among mid/large caps — and ticked up another 4.3pp this week. Rental car bears are not letting go.

BIRK (Birkenstock) jumped from 21.9% to 29.7%. That's a sharp build in just seven days. Shorts appear to be betting against the luxury footwear premium.

Meanwhile, Reddit favourite GME saw SI fall from 13.3% to 11.4%. SMCI (Super Micro) also shed 1.4pp. Both suggest shorts are quietly trimming risk on volatile names.

MSFT short interest dropped 63.5% in a single day — to just 187,000 shares. That is near a one-month low despite the stock slipping.

This is not financial advice.