QuantumSi is trading 6.11% up now at $0.84 after announcing interim Proteus results ahead of its September 29, 2026 presentation at the World HUPO Congress. - Proteus outperformed the company’s Platinum Pro instrument across reported sequencing measures, including 30 times more alignments in a control study. - It detected all 24 proteins in a panel; Proteus remains in development. - Broader indexes were nearly flat, making the announcement the clearest available catalyst for the move.