QuantumSi is trading at $1.37, up 12.35% on October 9, 2026; available reports do not directly attribute the move to a catalyst.
- On October 8, Quantum-Si announced detection of 19 amino acids in its Proteus development program, strengthening confidence in reaching all 20 by year-end.
- H.C. Wainwright reiterated its Buy rating and $4.00 price target on October 9.
- The biotech sector is down, while major indexes show modest gains.