 CrowdStrike Holdings shares plunging 11%. Global security firm at the center of today's Microsoft outage. Largest IT outage in history. Banks, airlines, hospitals, retail and more affected. Microsoft stock trading near neutral after today. NVIDIA down another 2%, down 9% the past week. Oil futures selling off. West Texas Intermediate Crude Oil down 3% in the session. The benchmark settling at $78 a barrel for the week.