Bears Hit Cerebras, Cover Wolfspeed

Short sellers made a big move into CBRS last week. Cerebras Systems saw its short interest jump from 6.3% to 25.6% of free float — a 19-point spike in just seven days. That's the largest weekly increase across US-listed stocks above $500M market cap.

The car rental trade is heating up. CAR (Avis Budget Group) sits at 45.8% SI % FF. HTZ (Hertz) is close behind at 44.5%. Both added roughly 4-6 percentage points this week. Hertz's availability is just 14% of short interest — meaning shares to borrow are getting scarce.

WOLF (Wolfspeed) tells a different story. Short interest fell 16.8 points to 95.7% of free float. Bears covered hard, though SI remains extreme. Cost to borrow stands at 8.3% — still the priciest name on the board.

TSLA remains a social media favourite. Tesla's short interest is modest at 2.7% of free float. Elon Musk dominated headlines again this weekend, linked to SpaceX's projected $330B revenue. Sentiment around the stock stays mixed.

GRND (Grindr) also drew attention. SI jumped 10 points to 22.2% — a notable new bearish bet on the social platform stock.

Data as of June 11, 2026. Not financial advice.