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

Company Overview

Quantum-Si Incorporated (NASDAQ:QSI) is a life sciences technology company focused on advancing proteomics, the study of proteins and their roles in biological systems. The company develops tools intended to help researchers identify and analyze proteins at the single-molecule level, supporting applications in drug discovery, translational research and precision medicine.

Its primary offering is the Platinum platform, which combines an automated instrument, proprietary sequencing technology, consumables and software for protein analysis. Quantum-Si’s approach is designed to provide researchers with detailed information about protein identity and sequence while reducing reliance on conventional, bulk-based analytical methods.

Quantum-Si was founded by a team that included entrepreneur and scientist Jonathan Rothberg and became a publicly traded company in 2021 through a business combination with HighCape Capital Acquisition Corp. The company markets its technology to academic, pharmaceutical, biotechnology and other life sciences customers, with operations and customer reach serving the global research community.

Key Stats

• Today's Range: $0.75 to $0.79
• 50-Day Range: $0.70 to $0.86
• 52-Week Range: $0.69 to $3.10
• Volume: 2.41 million shs
• Average Volume: 1.57 million shs
• Market Capitalization: $171.76 million
• P/E Ratio: N/A
• Dividend Yield: N/A
• Price Target: $1.00
• Consensus Rating: Hold

Quantum-Si Stock Analysis - MarketRank™

Quantum-Si scored higher than 42% of companies evaluated by MarketBeat, and ranked 612th out of 898 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: 3.4 / 5
• Analyst Rating: Hold

Consensus Rating

Quantum-Si has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, 1 hold rating, and 1 sell rating.

Upside Potential

Quantum-Si has a consensus price target of $1.00, representing about 27.4% upside from its current price of $0.78.

Amount of Analyst Coverage

Quantum-Si has only been the subject of 2 research reports in the past 90 days.

Earnings and Valuation

• Score: 1.3 / 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 -1.71, 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 -1.71, 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 0.77. P/B Ratios below 1 indicate that a company could be undervalued with respect to its assets and liabilities.

Short Interest

• Score: 1.0 / 5
• Short Interest Level: Bearish

Percentage of Shares Shorted

8.47% 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 4.78.

Change versus previous month

Short interest in Quantum-Si has recently increased by 1.20%, indicating that investor sentiment is decreasing.

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: 0.6 / 5
• News Sentiment: N/A

Search Interest

Only 3 people have searched for QSI on MarketBeat in the last 30 days. This is a decrease of -50% compared to the previous 30 days.

MarketBeat Follows

4 people have added Quantum-Si to their MarketBeat watchlist in the last 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 $56,802.00 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: 8/13/2026
• Today: 9/22/2026
• Next Earnings (Estimated): 11/04/2026
• 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: $1.00
• High Price Target: $1.00
• Low Price Target: $1.00
• Potential Upside/Downside: +27.4%
• Consensus Rating: Hold
• Rating Score (0-4): 2.00
• Research Coverage: 3 Analysts

Profitability

• EPS (Trailing Twelve Months): ($0.46)
• Trailing P/E Ratio: N/A
• Forward P/E Ratio: N/A
• P/E Growth: N/A
• Net Income: -$101.34 million
• Net Margins: -6,138.26%
• Pretax Margin: -6,144.17%
• Return on Equity: -47.12%
• Return on Assets: -43.18%

Debt

• Debt-to-Equity Ratio: N/A
• Current Ratio: 9.97
• Quick Ratio: 9.80

Sales & Book Value

• Annual Sales: $2.44 million
• Price / Sales: 70.39
• Cash Flow: N/A
• Price / Cash Flow: N/A
• Book Value: $1.02 per share
• Price / Book: 0.77

Miscellaneous

• Outstanding Shares: 218,880,000
• Free Float: 170,642,000
• Market Cap: $171.76 million
• Optionable: Optionable
• Beta: 3.25