Biotech Gainers: QTTB, GH, SNGX Jump on Positive Clinical and Regulatory News

Biotechnology stocks rallied on Wednesday, May 28, 2026, with Quantum BioPharma (QTTB), Guardant Health (GH), Soligenix (SNGX), and Nanovibronix (NNVX) among the top percentage gainers following company-specific catalysts. QTTB shares soared after the company reported positive Phase 2 trial results for its topical hair-loss therapy, demonstrating statistically significant hair regrowth in patients with androgenetic alopecia. Guardant Health climbed sharply after the American Cancer Society recommended its Shield blood test for colorectal cancer screening in average-risk adults, a move expected to broaden insurance coverage and market adoption. Soligenix advanced on renewed attention to its Ebola vaccine candidate, ThermoVax, as global health agencies highlighted pandemic preparedness. Nanovibronix also recorded strong gains, adding to the sector's upbeat session.