Short sellers made bold new bets last week. WaterBridge Infrastructure saw the sharpest jump — its SI % of Free Float leapt from 27.2% to 42.8% in just seven days. That is a 15.5 percentage point swing, one of the biggest moves in the US market.
Wolfspeed remains in extreme territory. Short interest sits at 117.5% of free float. Availability has hit zero. Bears show no sign of backing off the struggling chipmaker.
Robert Half also drew fresh shorts. SI climbed from 25.9% to 30.0%. The staffing firm faces ongoing pressure as the US labor market cools.
On the other side, KalVista Pharmaceuticals saw the biggest short squeeze signal. SI fell sharply from 34.3% to 25.0% in a week. Wynn Resorts also saw bears retreat — SI dropped 3.4 percentage points to 11.7%.
Tesla is lighting up social media. Chatter around a potential Tesla-SpaceX merger sent the stock trending online. Short interest remains low at just 2.7% of FF. Cost to borrow is a near-zero 0.34%. Bears have little ammunition here.
NANO Nuclear Energy is another name attracting attention. SI rose to 26.6% this week. Cost to borrow stands at 4.1%.
Data: ORTEX, as of May 25, 2026. Not financial advice.
ORTEX Market Intelligence content is generated by AI from a snapshot of ORTEX's proprietary data. Content is informational only and does not constitute investment advice.
