Quantum-Si (QSI) Stock Price, News & Analysis

Company Overview

Quantum-Si is a life sciences technology company developing tools for protein sequencing and proteomics research. Its platform uses semiconductor technology and single-molecule detection to analyze proteins, with the aim of making protein-level information more accessible to researchers.

The company’s offerings include the Platinum benchtop instrument, along with consumables, reagents and software used to prepare, run and analyze samples. Quantum-Si’s products are designed for research applications in areas such as drug discovery and biological research.

Founded in 2013 by life sciences entrepreneur Jonathan Rothberg, Quantum-Si is headquartered in Branford, Connecticut. The company became publicly traded in 2021 through a business combination with a special purpose acquisition company.

Key Stats

• Today's Range: $1.14 to $1.23
• 50-Day Range: $0.72 to $1.75
• 52-Week Range: $0.69 to $1.81
• Volume: 3.56 million shs
• Average Volume: 7.72 million shs
• Market Capitalization: $251.71 million
• P/E Ratio: N/A
• Dividend Yield: N/A
• Price Target: $2.50
• Consensus Rating: Hold

Quantum-Si Stock Analysis - MarketRank™

Quantum-Si scored higher than 67% of companies evaluated by MarketBeat, and ranked 217th out of 892 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation.

Analyst's Opinion

• Score: 3.8 / 5
• Analyst Rating: Hold

Consensus Rating

Quantum-Si has received a consensus rating of Hold. The company's average rating score is 2.40, and is based on no strong buy ratings, 3 buy ratings, 1 hold rating, and 1 sell rating.

Upside Potential

Quantum-Si has a consensus price target of $2.50, representing about 117.4% upside from its current price of $1.15.

Amount of Analyst Coverage

Quantum-Si has only been the subject of 3 research reports in the past 90 days.

Earnings and Valuation

• Score: 0.6 / 5
• Proj. Earnings Growth: Growing

Earnings Growth

Earnings for Quantum-Si are expected to grow in the coming year, from ($0.47) to ($0.42) per share.

Price to Earnings Ratio vs. the Market

The P/E ratio of Quantum-Si is -2.95, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.

Price to Earnings Ratio vs. Sector

The P/E ratio of Quantum-Si is -2.95, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.

Price to Book Value per Share Ratio

Quantum-Si has a P/B Ratio of 1.58. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.

Short Interest

• Score: 3.0 / 5
• Short Interest Level: Healthy

Percentage of Shares Shorted

7.44% of the float of Quantum-Si has been sold short.

Short Interest Ratio / Days to Cover

Quantum-Si has a short interest ratio ("days to cover") of 1.45, which is generally considered an acceptable ratio of short interest to trading volume.

Change versus previous month

Short interest in Quantum-Si has recently decreased by 3.82%, indicating that investor sentiment is improving.

Dividend

• Score: 0.0 / 5
• Dividend Strength: N/A

Dividend Yield

Quantum-Si does not currently pay a dividend.

Dividend Growth

Quantum-Si does not have a long track record of dividend growth.

News and Social Media

• Score: 3.0 / 5
• News Sentiment: 0.80

News Sentiment

Quantum-Si has a news sentiment score of 0.80. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a higher news sentiment than the 0.57 average news sentiment score of Healthcare companies.

News Coverage This Week

MarketBeat has tracked 3 news articles for Quantum-Si this week, compared to 3 articles on an average week.

Search Interest

Only 9 people have searched for QSI on MarketBeat in the last 30 days. This is a decrease of -36% compared to the previous 30 days.

MarketBeat Follows

5 people have added Quantum-Si to their MarketBeat watchlist in the last 30 days. This is an increase of 150% compared to the previous 30 days.

Company Ownership

• Score: 1.9 / 5
• Insider Trading: Selling Shares

Insider Buying vs. Insider Selling

In the past three months, Quantum-Si insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $28,513.00 in company stock.

Percentage Held by Insiders

22.04% of the stock of Quantum-Si is held by insiders. A high percentage of insider ownership can be a sign of company health.

Percentage Held by Institutions

39.90% of the stock of Quantum-Si is held by institutions.

Company Calendar

• Last Earnings: 11/05/2026
• Today: 11/14/2026
• Fiscal Year End: 12/31/2026

Industry, Sector and Symbol

• Stock Exchange: NASDAQ
• Sector: Healthcare
• Industry: Life Sciences Tools & Services
• Sub-Industry: Life Sciences Tools & Services
• Current Symbol: NASDAQ:QSI
• CIK: 1816431
• Web: www.quantum-si.com
• Phone: (203) 458-7100
• Fax: N/A
• Employees: 145
• Year Founded: 2013

Price Target and Rating

• Average Price Target for Quantum-Si: $2.50
• High Price Target: $4.00
• Low Price Target: $1.00
• Potential Upside/Downside: +117.4%
• Consensus Rating: Hold
• Rating Score (0-4): 2.40
• Research Coverage: 5 Analysts

Profitability

• EPS (Trailing Twelve Months): ($0.39)
• Trailing P/E Ratio: N/A
• Forward P/E Ratio: N/A
• P/E Growth: N/A
• Net Income: -$101.34 million
• Net Margins: -6,729.80%
• Pretax Margin: -6,738.81%
• Return on Equity: -44.72%
• Return on Assets: -41.26%

Debt

• Debt-to-Equity Ratio: N/A
• Current Ratio: 9.64
• Quick Ratio: 9.80

Sales & Book Value

• Annual Sales: $2.44 million
• Price / Sales: 103.16
• Cash Flow: N/A
• Price / Cash Flow: N/A
• Book Value: $0.73 per share
• Price / Book: 1.58

Miscellaneous

• Outstanding Shares: 218,880,000
• Free Float: 170,642,000
• Market Cap: $251.71 million
• Optionable: Optionable
• Beta: 3.26