PRISM Mid-Day Movers: Consumer Products and MedTech are Today’s Leaders.
GoPro (GPRO) is surging today, up roughly 44% as a wave of investor interest follows disclosure that YouTube creator Mark Fischbach—known as Markiplier—built an 8.5% stake in the company, making him its largest disclosed individual Class A shareholder. The move extends a highly speculative rally after GPRO gained 46.06% in the prior regular session and then rose further after hours; the stock’s low share price, heavy momentum trading, and a reported merger announcement have amplified the volatility.
bioAffinity Technologies (BIAF) is up 41% in midday trading after the company reported progress in advancing its CyPath Lung test for monitoring lung-cancer survivors for potential recurrence after curative-intent treatment. The announcement expands the test’s potential clinical use and has generated strong, catalyst-driven interest in the shares.
Other Notable Movers:
AEye’s (LIDR) up 33%
TDH Holdings, Inc. (PETZ) up 26%
BioXcel Therapeutics, Inc. (BTAI) down -21%
Stock prices and percentage changes are as of 12:15 p.m. ET on September 1, 2026, and are subject to change.
