Cardio Diagnostics Holdings is trading 8.51% higher at $2.04 after the October 8, 2026 regular-session close at $1.88; its immediate catalyst remains unclear.
- No clear company-specific announcement or event explaining the after-hours rise was found; recent company news surfaced in search was dated earlier.
- Reuters reported that higher oil prices and Treasury yields renewed inflation concerns as broader markets weakened during the session, though that risk-off backdrop does not directly explain the stock’s after-hours gain.