Auddia (AUUD) shares were down 35% in Friday premarket activity, paring Thursday's rally.
Coursera (COUR) stock was 10% lower after the company reported overnight lower Q1 non-GAAP earnings that also trailed analysts' estimates.
Hartford Insurance Group (HIG) shares were down 7.1%, a day after the company posted lower-than-expected Q1 core earnings and revenue.
Boyd Gaming (BYD) stock was down 6.8% after the company reported overnight lower Q1 adjusted earnings that also missed analysts' forecasts.