Quantum-Si Incorporated Class A Common Stock (QSI)
Stock · NASDAQ · Industrials
$0.78as of 8/28/2026
Price chart
Open in TradingViewActive signals
No technical signal is currently active for this symbol.
Resistance level
$0.90175
Industry
Industrial Machinery/Components
About QSI
Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer's protein sample for sequencing; and seque…
- Sector
- Industrials
- Industry
- Industrial Machinery/Components
- Employees
- 145
- Website
- www.quantum-si.com
Fundamentals
- 1-day range
- $0.71$0.767
- Market cap
- $164.41M
- P/E (trailing)
- —
- P/E (forward)
- -2.11
- EPS (trailing)
- $-0.46
- Dividend yield
- —
- Beta
- —
- Avg. volume
- 4.80M
52-week range
$0.69$3.1
Next earnings: August 13, 2026 · EPS estimate $-0.10confirmed
How Quantum-Si Incorporated Class A Common Stock Makes Money
Where the revenue actually goes — FY2025 annual results
Source: 10-K filed Mar 3, 2026 · via SEC EDGAR / Finnhub
Forecasts
3 analyst ratings
Buy 67%
Hold 33%
Sell 0%
1-year price forecast
High
$4
+412.8%
Median
$1.9
+143.6%
Low
$1
+28.2%
Quantum-Si Incorporated Class A Common Stock Competitors
Chosen by industry and closest market cap.
- QSIQuantum-Si Incorporated Class A Common Stock$0.78▼ 2.86%Market cap $164.41MP/E —$0.69$3.1
- OWLTOwlet Inc. Class A Common Stock$4.97▼ 0.80%Market cap $158.11MP/E —$4.19$16.94
- TAYDTaylor Devices Inc. Common Stock$60.17▼ 1.04%Market cap $171.03MP/E 16.88$40.5$90.37
- CHPTChargePoint Holdings Inc. Common Stock$5.57▼ 4.55%Market cap $152.28MP/E —$4.44$12.61
- HURCHurco Companies Inc. Common Stock$22.88▲ 1.58%Market cap $141.83MP/E —$14.5$23.75
- SESSES AI Corporation Class A Common Stock$0.524▼ 4.38%Market cap $187.45MP/E —$0.4909$3.73
- EAFGrafTech International Ltd. Common Stock$7.4▼ 0.40%Market cap $199.34MP/E —$4.92$20.32
| Symbol | Market cap | P/E ratio | Price | 1D | 52-week range |
|---|---|---|---|---|---|
| QSI Quantum-Si Incorporated Class A Common Stock | $164.41M | — | $0.78 | ▼ 2.86% | $0.69$3.1 |
| OWLT Owlet Inc. Class A Common Stock | $158.11M | — | $4.97 | ▼ 0.80% | $4.19$16.94 |
| TAYD Taylor Devices Inc. Common Stock | $171.03M | 16.88 | $60.17 | ▼ 1.04% | $40.5$90.37 |
| CHPT ChargePoint Holdings Inc. Common Stock | $152.28M | — | $5.57 | ▼ 4.55% | $4.44$12.61 |
| HURC Hurco Companies Inc. Common Stock | $141.83M | — | $22.88 | ▲ 1.58% | $14.5$23.75 |
| SES SES AI Corporation Class A Common Stock | $187.45M | — | $0.524 | ▼ 4.38% | $0.4909$3.73 |
| EAF GrafTech International Ltd. Common Stock | $199.34M | — | $7.4 | ▼ 0.40% | $4.92$20.32 |
P/E shows — for peers not currently carrying a live signal of their own.
Latest news
- Quantum-Si incorporated Q2 2026 Earnings Call SummaryYahoo · 8/14/2026
- Quantum-Si Inc (QSI) (Q2 2026) Earnings Call Highlights: Proteus Launch Delayed to Q2 2027, ...Yahoo · 8/14/2026
- Quantum-Si Q2 Earnings Call HighlightsYahoo · 8/14/2026
- Quantum-Si incorporated (QSI) Q2 2026 Earnings Call TranscriptSeekingAlpha · 8/14/2026
- Quantum-Si Incorporated (QSI) Reports Q2 Loss, Tops Revenue EstimatesYahoo · 8/13/2026
- Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development UpdateYahoo · 8/13/2026
- Full Transcript: Quantum-Si Q2 2026 Earnings CallBenzinga · 8/13/2026
- Quantum-Si Announces Reduction In Force Of ~ 20% Of WorkforceBenzinga · 8/13/2026
Insider Activity
Insider Actions →Acquired
1.76M
Disposed
76.7K
- Christian LaPointe · June 23, 2026 · Sale7.8K @ $0.899
- John S. Vieceli · June 23, 2026 · Sale15.1K @ $0.899
- Jeffry R. Keyes · June 23, 2026 · Sale4.1K @ $0.899
- Jeffrey Alan Hawkins · June 23, 2026 · Sale11.3K @ $0.899
- Christian LaPointe · June 22, 2026 · Sale7.8K @ $0.9574
- John S. Vieceli · June 22, 2026 · Sale15.1K @ $0.9574
- Jeffry R. Keyes · June 22, 2026 · Sale4.1K @ $0.9574
- Jeffrey Alan Hawkins · June 22, 2026 · Sale11.3K @ $0.9574
- Jafri Amir · May 18, 2026 · Grant251.2K
- Paula Dowdy · May 18, 2026 · Grant251.2K
- John P. Kenny · May 18, 2026 · Grant251.2K
- Charles R. Kummeth · May 18, 2026 · Grant251.2K
- Scott Mendel · May 18, 2026 · Grant251.2K
- Brigid Makes · May 18, 2026 · Grant251.2K
- Fattori Ruth A · May 18, 2026 · Grant251.2K
Institutional Ownership
March 31, 2026
- Total shares held
- 61.29M
- Total value held
- $47.33M
- Institutional holders
- 153
Top holders this quarter
- Unknown13.41M
- Unknown7.02M
- Unknown6.88M
- Unknown4.39M
- Unknown4.39M
- Unknown3.84M
- Unknown3.77M
- Unknown2.39M
- Unknown1.94M
- Unknown1.70M
See the full, filterable feed with live charts on the MarketWall dashboard.