CDIO is trading 10.5% down at $1.97 in pre-market. - This decline comes despite the announcement today that Atlas Healthcare Physicians will cover Cardio Diagnostics' Epi+Gen CHDâ„¢ and PrecisionCHDâ„¢ tests for its members. - The stock's movement follows an 11.68% rally in the previous session on June 23, 2026.