Bears Pile Into Wolfspeed, Hertz and MGM

Short sellers stepped up bets across several names this week. WOLF — the embattled silicon carbide chipmaker — saw its short interest climb to 81.1% of free float, up from 77.2% just seven days ago. That 3.9 percentage-point jump is the biggest weekly move among stocks with a market cap above $500M. Availability sits at zero, meaning new short positions are almost impossible to open.

HTZ is close behind at 67.5% short interest, up 2.9 points on the week. The car rental firm has been a favourite bear target for months. Borrow costs remain relatively low at 5%, suggesting shorts aren't scrambling to cover yet.

Casino operator MGM saw a notable 2.2 point rise in short interest to 13%. That's still a moderate level, but the direction is clear. Availability is abundant at over 1,000% of SI, so bears face no friction adding exposure.

On the extreme end, MVIS — MicroVision — holds a staggering 197% short interest of free float. Availability is just 17%, with a 14-day cost-to-borrow near 15%. That combination signals a stock in a very tight squeeze setup. The lidar company has fallen 66% over the past three months.

EVCM (EverCommerce) leads on short score at 95, with 23 days to cover and borrowing costs near 40%. That level of borrow cost signals serious bear conviction in the software name.

Rocket Lab RKLB is making headlines after a 41% rally from July lows — worth watching whether short covering is fuelling any of that move.