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Short sellers turned the most aggressive on MMED this week. The medical device maker's short interest hit 91% of free float. That is up 16.5 percentage points in just seven days. Borrow costs stand at 35.6% and availability has all but vanished, at just 0.08% of short interest. Squeezing the bears here would require enormous buying pressure.
WOLF remains deeply shorted at 81.5% of free float. Zero shares are available to borrow. The silicon carbide chipmaker continues to attract heavy scepticism as it burns cash rebuilding its manufacturing base. Chip stocks broadly faced selling pressure this week after South Korean tech heavyweights fell sharply on AI spending concerns.
Talen Energy is a newer addition worth watching. Short interest jumped 5.3 percentage points to 11.8% of float. The nuclear power company trades at a $17.9bn market cap. ORTEX alt data shows Southern Company's reactor output ran 10 standard deviations below its own history in early September, a reminder that power generation volatility is real. Bears may be pricing in similar operational risk at Talen.
Hertz sits at 71.2% short interest. Days to cover stands at 7.8. The rental car company offers no respite to bulls, with cost-to-borrow at 5.5%.
On the covering side, Citi Trends saw short interest fall 5.3 points to 18.4%. That is the sharpest covering among US small caps this week.
TFI International saw a reported intraday short interest spike of 38%, reaching a three-week high at 1.54% of float. That is small in absolute terms but large as a single-day move for a transport name.
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.