Namib Minerals (NAMM) shares were 82% higher pre-bell Friday following a 1.5% loss in the previous session.
Figma (FIG) stock was up 21%, extending Thursday's rally.
Reddit (RDDT) shares were 14% higher, a day after the company swung to Q2 earnings and posted higher revenue.
Bio-Rad Laboratories (BIO) stock was up 10% after the company reported late Thursday Q2 earnings and revenue that topped analysts' estimates.