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$1.27
−2.31%Market closedDelayed 15 minutes · Source: ViewTrade · 5 Nov 2026, 06:29 IST · A quote does not mean the product is available to trade on your account.
In brief
Questions investors ask
Quotes run fifteen minutes behind.
1 month: +5.7% (SPY −1.6%). 3 months: +70.5% (SPY −0.4%). 1 year: −29.9% (SPY +13.6%). Price change to the 4 Nov 2026 close; dividends excluded.
Daily closes, split-adjusted: QSI, SPY · as of 4 Nov 2026
The 4 Nov 2026 close of $1.29 was 20.3% above its 50-day average ($1.07) and 33.9% above its 200-day average ($0.96). It has closed above the 200-day for 27 sessions, since 29 Sep 2026. The 50-day average crossed above the 200-day on 23 Oct 2026, 8 sessions ago.
Daily closes, split-adjusted; 50- and 200-session simple averages · as of 4 Nov 2026
Closed at $1.29 on 4 Nov 2026: 28.7% below the 52-week high of $1.81 (29 Oct 2026) and 87.0% above the low of $0.69 (30 Jul 2026).
Daily price bars, split-adjusted · as of 4 Nov 2026
13.2M shares were sold short at the 15 Oct 2026 settlement, 6.6% of the 198.9M shares outstanding; covering them would take 1.0 days of average volume. Short interest is reported twice a month, on a lag.
Exchange short-interest filing · as of 15 Oct 2026
Price return, split-adjusted
At the 4 Nov 2026 close
Quantum-Si Inc is a life sciences company focused on proteomics research and analytical technologies. It develops single-molecule detection platforms designed to enable next-generation protein sequencing (NGPS) and large-scale protein analysis. Its technology supports massively parallel sequencing of proteins and can also be applied to the study of nucleic acids, providing tools for researchers and clinical applications in molecular analysis. The company's revenue is derived from sales of products and services.
December 27, 2024
+67.44%December 26, 2024
+65.38%November 20, 2024
+119.59%