Mar. 21 at 6:10 AM
$CODX Mar 20 CODX 56,747,138 volume closing at
$2.59. Chart starts shorty after 9:30 am to avoid premarket overwhelming day trade volumes. 318,870 after-hour shares trading at
$2.38 to
$2.59. CODX shares outstanding is ~2.256 million and today's trade volume greatly exceeds that number in multiples. A lot of short sales likely occurred today.
https://www.nasdaq.com/market-activity/stocks/codx/advanced-charting