Bears Circle Cerebras as HTZ and Birkenstock Draw Fire

CBRS saw the biggest short interest jump of the week. SI % of free float leapt from 6.25% to 27.7% — a 21 percentage point swing in just seven days. The AI chip startup carries a cost to borrow of 1.15% with only 20% availability remaining.

HTZ also drew heavy short selling. Hertz sits at 45% SI % FF, up from 39.6% a week ago. Availability has shrunk to just 19%. Bears are clearly betting the car rental giant's recovery story has limits.

BIRK is another notable mover. Short sellers added 8.9 percentage points in a week. The sandal maker now sits at 30.9% SI % FF, with a steep cost to borrow of 19.3% and near-zero availability. That squeeze risk is real.

On the covering side, WOLF shorts ran for the exits. Wolfspeed's SI dropped 18 points to 99.8% SI % FF — still extreme, with zero shares available to borrow and a CTB of 8.7%.

In meme territory, GME holds at 13% and MSTR at 12.2%. TSLA stays lightly shorted at just 2.8% SI % FF, with massive availability above 9,500%.