Bears Double Down: WOLF Leads the Week's Short Surge

Short sellers had a busy week. Wolfspeed stands out as the most dramatic move among recognisable names. SI jumped from 71% to 107% of free float in seven days — a 36-point spike. The semiconductor firm is deep in financial distress. Its shares have paradoxically rallied 250% over three months, yet short sellers are piling in harder than ever. Cost to borrow sits at 6.6%, and availability has dropped to near zero.

Among micro-cap movers, Edible Garden saw SI explode from 7% to 153% of free float week-over-week. WORK Medical Technology followed with a jump from 5.5% to 123%.

On the squeeze watchlist, GameStop sits at 15.3% SI, barely changed. AMC crept up to 11.1%. Neither has the explosive short build that typically precedes a squeeze — shorts look comfortable for now.

ARS Pharmaceuticals remains one of the most shorted mid-caps at 68% of float, with 25 days to cover. That's a significant squeeze risk if sentiment shifts.

Hedge funds are going "all-in" on semiconductors per latest reports, with SOXX exposure at record highs. That makes NVIDIA's flat SI of 1.2% unsurprising — few want to fight that momentum.

Data as of 15 May 2026. Not financial advice.