Quantum-Si Incorporated - Class A (QSI) Stock Price

0.9321 ▼ -0.0979 (-9.50%)
Open: 1.03 Vol: 8.03M Day's range: 0.9248 - 1.04 Feb 05, 16:00 EST
IEX quote, 15 minutes delayed during trading hours. Login or Signup to see real-time data
Free Stock Screener
Loading chart ...
QSI Technical Analysis
5 mins 30 mins Hourly Daily Weekly
SELL SELL SELL SELL SELL
  5 mins 30 mins Hourly Daily Weekly
MA5 0.93▲ 0.94▼ 0.94▼ 1.06▼ 1.16▼
MA10 0.93▲ 0.95▼ 0.97▼ 1.13▼ 1.22▼
MA20 0.94▼ 0.98▼ 1.02▼ 1.19▼ 1.47▼
MA50 0.95▼ 1.04▼ 1.10▼ 1.25▼ 1.46▼
MA100 0.97▼ 1.11▼ 1.17▼ 1.50▼ 1.47▼
MA200 1.02▼ 1.18▼ 1.20▼ 1.50▼ 1.90▼
  5 mins 30 mins Hourly Daily Weekly
MACD 0.000▲ -0.001▼ -0.006▼ -0.023▼ -0.047▼
RSI 44.110▼ 30.078▼ 25.723▼ 28.006▼ 37.289▼
STOCH 30.283     8.170▼ 7.921▼ 9.867▼ 20.877    
WILL %R -54.206     -91.099▼ -94.403▼ -98.198▼ -99.421▼
CCI -19.208     -109.193▼ -100.480▼ -186.004▼ -170.966▼
Latest Filters Detected On QSI
▼ RSI $QSI RSI(14) Crossed Below 30 Set Alert
▼ BREAK $QSI Price Breaks 60 Days Low Set Alert
▼ BREAK $QSI Price Breaks 30 Days Low Set Alert
▼ BREAK $QSI Price Breaks 20 Days Low Set Alert
▼ BREAK $QSI Price Breaks 10 Days Low Set Alert
Quantum-Si Incorporated - Class A News
Quantum-Si Announces the Release of Two New Manuscripts Demonstrating the Value of Single-Molecule Protein Sequencing in Clinical Proteomics and Pathogen & Toxin Detection
Thursday, February 05, 2026 05:43 AM
Si Incorporated (Nasdaq: QSI) ("Quantum-Si," "QSI" or the "Company"), a proteomics technology company redefining protein analysis through single-molecule detection, today announced two new manuscripts ...
Quantum-Si outlines continued placement-driven growth and Proteus launch milestones as market pressures persist
Tuesday, February 03, 2026 01:54 AM
Nov. 05, 2025 11:02 PM ETQuantum-Si incorporated (QSI) Stock, QSIAW StockAI-Generated Earnings Calls Insights ...
Quantum-Si Announces Launch of New Version 3 Library Preparation Kit and a Suite of Data Analysis Tool Enhancements
Monday, December 22, 2025 05:00 AM
BRANFORD, Conn.--(BUSINESS WIRE)-- Quantum-Si Incorporated (QSI) (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics technology company ...
QSI historical stock data
date open high low close volume
05/02/26 1.03 1.04 0.9248 0.9321 8,032,092
04/02/26 1.10 1.11 0.9994 1.03 6,312,317
03/02/26 1.11 1.125 1.05 1.09 4,993,126
02/02/26 1.11 1.13 1.09 1.10 3,741,460
30/01/26 1.16 1.186 1.11 1.13 5,427,500
29/01/26 1.20 1.20 1.13 1.17 6,120,712
28/01/26 1.23 1.24 1.17 1.20 3,909,700
27/01/26 1.22 1.26 1.20 1.23 2,808,000
26/01/26 1.25 1.27 1.21 1.21 3,118,000
23/01/26 1.31 1.32 1.24 1.25 4,083,000
Quote Details
52wk Low:0.925
52wk High:3.10
Vol:8.03M
Avg Vol(3m):75.2M
1Y Chng:-42.46%
1M Chng:-24.22%
Add to Watch List
More Information
Index US Composite
Market Cap. 221.95M