Bears Pile Into AI and Chips; Wolfspeed Hits Record Short

Short sellers made bold new moves last week. SharonAI Holdings saw the most dramatic jump — short interest as a % of free float leapt from 12.7% to 54.6%, a gain of nearly 42 percentage points in just seven days. That is one of the fastest single-week climbs in the market right now.

Wolfspeed remains the most shorted stock in the $500M+ universe. Its SI % FF hit 103.5% — more shares are shorted than exist in the free float. Availability is zero. Borrowing costs sit at 7.7% APR. Bears have no sign of backing off.

Cerebras Systems also drew fresh attention. SI % FF climbed to 32.8%, with zero shares available to borrow. The AI chip maker has become a favourite short target despite its $8B market cap.

On the covering side, EchoStar saw shorts retreat. SI % FF fell from 32.0% to 29.2% over the week. SATS has been a satellite-sector battleground for months.

Among meme-favourites, GameStop sits at 14.1% SI % FF — barely changed week-on-week. TSLA short interest remains low at 2.9%. Bears have largely abandoned the name.

Robinhood Markets grabbed headlines today with a $2B convertible note offering — a move worth watching given its retail-trader user base and any knock-on sentiment effects on heavily shorted names.

Data as of 19 June 2026. Not financial advice.