Bears Circle Cerebras, Talen, and Wolfspeed

Short sellers have been busy this week. The biggest moves in SI % of Free Float over seven days come from Cerebras Systems, Talen Energy, and Wolfspeed.

Cerebras, the AI chip maker that listed last month, saw its SI % FF jump 5.2 points to 20.1% in the week to 29 October. The move came as semiconductor sentiment soured broadly. AMD bears are active too, with AI bubble concerns circulating on social platforms this weekend.

Talen Energy added 4.6 points of short interest. SI % FF now sits at 10.8% at the $16.4bn nuclear power company.

Wolfspeed remains the most heavily shorted large-cap name with SI % FF at 88.6%, up another 4.8 points this week. Shares to borrow have essentially run out, with availability near zero.

Liquidia Corporation saw the second-biggest weekly rise: up 8.1 points to 26.6%. Grindr climbed 4.9 points to 19.4%.

Hertz still carries 73.5% SI % FF and a cost to borrow of 40%. Availability is at zero, making new short positions expensive to open.

Ferrari reports on 3 November. ORTEX alt data shows Austrian car registrations running 75% below the same quarter last year, though the fit with Ferrari revenue is weak. Reddit short interest stands at 14.7% of FF, with earnings-week options activity elevated per ORTEX data.

EverCommerce holds the highest ORTEX short score at 97, with a cost to borrow of 87.6% and availability below 1%.