Quantum-Si - 6 Year Stock Price History | QSI
Historical daily share price chart and data for Quantum-Si since 2020 adjusted for splits and dividends. The latest closing stock price for Quantum-Si as of September 08, 2026 is 0.76.
- The all-time high Quantum-Si stock closing price was 22.41 on February 18, 2021.
- The Quantum-Si 52-week high stock price is 3.10, which is 307.9% above the current share price.
- The Quantum-Si 52-week low stock price is 0.69, which is 9.2% below the current share price.
- The average Quantum-Si stock price for the last 52 weeks is 1.14.
| Quantum-Si Historical Annual Stock Price Data | ||||||
|---|---|---|---|---|---|---|
| Year | Average Stock Price | Year Open | Year High | Year Low | Year Close | Annual % Change |
| 2026 | 0.9409 | 1.1600 | 1.3100 | 0.7020 | 0.7600 | -30.91% |
| 2025 | 1.6132 | 4.2600 | 4.2900 | 1.0000 | 1.1000 | -59.26% |
| 2024 | 1.3679 | 2.0300 | 3.6000 | 0.6330 | 2.7000 | 34.33% |
| 2023 | 1.8685 | 1.8400 | 3.8900 | 1.1450 | 2.0100 | 9.84% |
| 2022 | 3.6115 | 8.2200 | 8.2200 | 1.8200 | 1.8300 | -76.75% |
| 2021 | 9.9520 | 10.4900 | 22.4100 | 5.6500 | 7.8700 | -22.46% |
| Sector | Industry | Market Cap | Revenue |
|---|---|---|---|
| Computer and Technology | Semiconductors | $0.168B | $0.002B |
| Quantum-Si Incorporated is a company pioneering next-generation semiconductor chip-based proteomics. Quantum-Si Incorporated, formerly known as HighCape Capital Acquisition Corp., is based in NEW YORK. | |||
| Stock Name | Country | Market Cap | PE Ratio |
|---|---|---|---|
| Broadcom (AVGO) | United States | $1702.714B | 41.76 |
| SK Hynix - (SKHY) | $1292.972B | 0.00 | |
| Lam Research (LRCX) | United States | $384.969B | 52.86 |
| Applied Materials (AMAT) | United States | $360.857B | 41.68 |
| ARM Holdings (ARM) | United Kingdom | $269.252B | 274.01 |
| Marvell Technology (MRVL) | United States | $196.031B | 89.78 |
| QUALCOMM (QCOM) | United States | $177.216B | 19.09 |
| Infineon Technologies AG (IFNNY) | Germany | $86.310B | 37.85 |
| ASE Technology Holding (ASX) | Taiwan | $83.846B | 43.62 |
| United Microelectronics (UMC) | Taiwan | $52.291B | 19.41 |
| Credo Technology (CRDO) | Cayman Islands | $32.059B | 57.62 |
| Qnity Electronics (Q) | United States | $25.203B | 29.38 |
| Tower Semiconductor (TSEM) | Israel | $25.002B | 87.88 |
| GlobalFoundries (GFS) | United States | $24.807B | 31.84 |
| Entegris (ENTG) | United States | $21.158B | 43.22 |
| Lattice Semiconductor (LSCC) | United States | $15.879B | 199.83 |
| Rohm (ROHCY) | Japan | $12.179B | 53.47 |
| Amkor Technology (AMKR) | United States | $11.869B | 21.42 |
| Nova (NVMI) | Israel | $11.826B | 43.88 |
| Rambus (RMBS) | United States | $9.269B | 38.15 |
| Applied Optoelectronics (AAOI) | United States | $8.925B | 0.00 |
| FormFactor (FORM) | United States | $8.100B | 57.72 |
| Allegro MicroSystems (ALGM) | United States | $6.824B | 85.14 |
| Cirrus Logic (CRUS) | United States | $5.674B | 13.67 |
| Soitec SA (SLOIF) | France | $5.413B | 0.00 |
| Impinj (PI) | United States | $5.273B | 539.28 |
| Greif (GEF.B) | United States | $5.015B | 27.64 |
| Diodes (DIOD) | United States | $4.227B | 49.89 |
| AXT Inc (AXTI) | United States | $4.042B | 3082.00 |
| Synaptics (SYNA) | United States | $3.871B | 78.56 |
| Navitas Semiconductor (NVTS) | United States | $3.081B | 0.00 |
| Ambarella (AMBA) | United States | $2.759B | 0.00 |
| Himax Technologies (HIMX) | Taiwan | $2.386B | 66.41 |
| NLight (LASR) | United States | $2.311B | 0.00 |
| Ams-OSRAM AG (AMSSY) | Austria | $2.216B | 0.00 |
| Ichor Holdings (ICHR) | United States | $2.112B | 626.44 |
| Ambiq Micro (AMBQ) | United States | $1.389B | 0.00 |
| POET Technologies (POET) | Canada | $1.216B | 0.00 |
| Indie Semiconductor (INDI) | United States | $0.835B | 0.00 |
| Alpha And Omega Semiconductor (AOSL) | United States | $0.763B | 0.00 |
| IQE (IQEPF) | United Kingdom | $0.643B | 0.00 |
| NVE (NVEC) | United States | $0.486B | 26.99 |
| SEALSQ (LAES) | Switzerland | $0.467B | 0.00 |
| Aeluma (ALMU) | United States | $0.237B | 0.00 |
| Silvaco (SVCO) | United States | $0.222B | 0.00 |
| QuickLogic (QUIK) | United States | $0.197B | 0.00 |
| Valens Semiconductor (VLN) | Israel | $0.185B | 0.00 |
| GCT Semiconductor Holding (GCTS) | United States | $0.163B | 0.00 |
| Atomera (ATOM) | United States | $0.158B | 0.00 |
| Coda Octopus Group (CODA) | United States | $0.115B | 23.65 |
| Sono-Tek (SOTK) | United States | $0.079B | 38.62 |
| Rubicon Technology (RBCN) | United States | $0.059B | 0.00 |
| Nano Labs (NA) | China | $0.053B | 0.00 |
| Sequans Communications S.A (SQNS) | France | $0.042B | 0.00 |
| SemiLEDS (LEDS) | Taiwan | $0.016B | 0.00 |
| Mobix Labs (MOBX) | United States | $0.016B | 0.00 |
| Semilux (SELX) | Taiwan | $0.016B | 0.00 |
| SmartKem (SMTK) | United Kingdom | $0.001B | 0.00 |
| SkyWater Technology (SKYT) | United States | $0.000B | 0.00 |