Bears Pile In — Cerebras, Grindr Lead SI Surge

Short sellers made aggressive moves this week. Cerebras Systems saw the biggest jump — SI % of Free Float rocketed from 6.3% to 32.4% in just seven days. That's a 26-point leap. Availability sits at zero, meaning shares to borrow have effectively dried up.

SharonAI Holdings also drew heavy shorting. SI climbed from 7.6% to 26.6% week-on-week, with a cost to borrow of 5.7%. Bearish money is clearly circling the AI space hard.

Grindr saw its SI jump over 10 points to 22.3%. That move is notable given its $2.2B market cap. Availability sits at 128%, so there's still room to add positions.

In rental cars, Avis Budget Group carries the heaviest load among large-caps. SI sits at 47.8% of FF, up 7 points over the week.

On the social buzz side, Rivian remains a target at 17.9% SI. GameStop holds 13.0%. Strategy (MSTR) sits at 12.4% as Bitcoin speculation swirls.

One wild card: Oxford Lane Capital saw its cost to borrow explode 404% in one week to 10.4%. Utilization hit 92%. That's a borrowing squeeze in progress.