Quantum Si (NASDAQ: QSI) is owned by 30.70% institutional shareholders, 68.08% Quantum Si insiders, and 1.22% retail investors. Jonathan M. Rothberg is the largest individual Quantum Si shareholder, owning 51.57M shares representing 36.39% of the company. Jonathan M. Rothberg's Quantum Si shares are currently valued at $85.61M.
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