Edited by Peter Hillerberg1 min readStories are generated from ORTEX data and reviewed by the ORTEX team. How we publish
Short sellers made bold moves this week. MMED (MiniMed Group) saw the sharpest jump among mid-cap US stocks. Short interest hit 102.9% of free float, up 24 percentage points in just seven days. Borrowing availability has collapsed to just 1.1%, making new positions extremely hard to build. The ORTEX short score sits at 91.7 out of 100.
WOLF (Wolfspeed) held near the top of the most-shorted list. Short interest stands at 84.2% of free float, adding 3.7 points week-on-week. Days to cover is 11.3, meaning a short squeeze would take time to unwind.
On the other side, CHWY (Chewy) shorts trimmed positions. Short interest fell from 68.2% to 66.0% of free float over the week, one of the larger unwinds among established heavily-shorted names.
WK (Workiva) attracted fresh bears. ORTEX data shows SI rose 24% in a week to 8.8% of free float, coinciding with analyst upgrades.
HTZ (Hertz) remains under pressure at 71.7% SI of free float. Availability has effectively hit zero, signalling that borrowing capacity is exhausted.
MDT (Medtronic) was a notable mover among large caps. Its SI jumped from 1.5% to 4.6% of free float in one week. Total Medicare beneficiaries reached a record 70.6 million in June 2026, per ORTEX Alt Data, a demographic tailwind that bears appear to be looking past.
ORTEX Market Intelligence content is generated by AI from a snapshot of ORTEX's proprietary data and reviewed by the ORTEX team. Content is informational only and does not constitute investment advice.
