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

Company Overview

Quantum-Si incorporated, a life sciences company, engages in the development of single-molecule detection platform to enable Next Generation Protein Sequencing (NGPS). The company's platform is comprised of the Platinum NGPS instrument; the Platinum Analysis Software service; and reagent kits and semiconductor chips for use with its instruments. It is used in protein identification, protein variants, antibody characterization, biomarker identification, and post translational modification analysis applications. The company was founded in 2013 is headquartered in Branford, Connecticut.

Key Stats

• Today's Range: $1.10 to $1.15
• 50-Day Range: $1.00 to $2.08
• 52-Week Range: $0.61 to $5.77
• Volume: 3.36 million shs
• Average Volume: 6.71 million shs
• Market Capitalization: $226.79 million
• P/E Ratio: N/A
• Dividend Yield: N/A
• Price Target: $3.48
• Consensus Rating: Moderate Buy

Quantum-Si Stock Analysis - MarketRank™

Quantum-Si scored higher than 67% of companies evaluated by MarketBeat, and ranked 359th out of 656 stocks in the computer and technology sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation.

Analyst's Opinion

• Score: 3.3 / 5
• Analyst Rating: Moderate Buy

Consensus Rating

Quantum-Si has received a consensus rating of Moderate Buy. The company's average rating score is 2.67, and is based on 2 buy ratings, 1 hold rating, and no sell ratings.

Amount of Analyst Coverage

Quantum-Si has received no research coverage in the past 90 days.

Earnings and Valuation

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

Earnings Growth

Earnings for Quantum-Si are expected to decrease in the coming year, from ($0.65) to ($0.75) per share.

Price to Earnings Ratio vs. the Market

The P/E ratio of Quantum-Si is -1.65, 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 -1.65, 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 0.87. P/B Ratios below 1 indicate that a company could be undervalued with respect to its assets and liabilities.

Short Interest

• Score: 4.0 / 5
• Short Interest Level: Healthy

Percentage of Shares Shorted

14.36% 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 2.4, 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 6.99%, indicating that investor sentiment is improving significantly.

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.

Sustainability and ESG

• Score: N/A
• Environmental Score: N/A

Percentage of Shares Shorted

14.36% 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 2.4, 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 6.99%, indicating that investor sentiment is improving significantly.

News and Social Media

• Score: 3.8 / 5
• News Sentiment: N/A

News Sentiment

Quantum-Si has a news sentiment score of 1.87. 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 1.01 average news sentiment score of Computer and Technology companies.

News Coverage This Week

MarketBeat has tracked 1 news article for Quantum-Si this week, compared to 3 articles on an average week.

Search Interest

25 people have searched for QSI on MarketBeat in the last 30 days. This is an increase of 19% compared to the previous 30 days.

MarketBeat Follows

9 people have added Quantum-Si to their MarketBeat watchlist in the last 30 days. This is an increase of 13% compared to the previous 30 days.

Company Ownership

• Score: 2.5 / 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 $87,346.00 in company stock.

Percentage Held by Insiders

22.95% 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

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

QSI Stock Analysis - Frequently Asked Questions

How have QSI shares performed this year?

Quantum-Si's stock was trading at $2.70 at the beginning of 2025. Since then, QSI shares have decreased by 58.5% and is now trading at $1.12.

How were Quantum-Si's earnings last quarter?

Quantum-Si Incorporated (NASDAQ:QSI) issued its earnings results on Tuesday, August, 5th. The company reported ($0.16) earnings per share for the quarter, meeting analysts' consensus estimates of ($0.16). The firm earned $0.59 million during the quarter, compared to analysts' expectations of $1.28 million. Quantum-Si had a negative trailing twelve-month return on equity of 44.57% and a negative net margin of 3,120.14%.
Read the conference call transcript.

Who are Quantum-Si's major shareholders?

Top institutional shareholders of Quantum-Si include ARK Investment Management LLC (4.34%), Sumitomo Mitsui Trust Group Inc. (3.06%), Nikko Asset Management Americas Inc. (3.06%) and Geode Capital Management LLC (1.88%). Insiders that own company stock include Jeffrey Alan Hawkins, Jonathan M Rothberg, Jeffry R Keyes, John S Vieceli, Christian Lapointe, Charles R Kummeth and Grace Johnston.
View institutional ownership trends.

How do I buy shares of Quantum-Si?

Shares of QSI stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services.

What other stocks do shareholders of Quantum-Si own?

Based on aggregate information from My MarketBeat watchlists, some other companies that Quantum-Si investors own include Digital Turbine (APPS), Archer Aviation (ACHR), SoFi Technologies (SOFI), ChargePoint (CHPT) and Canoo (GOEV).

Company Calendar

• Last Earnings: 8/05/2025
• Today: 9/01/2025
• Next Earnings (Estimated): 11/11/2025
• Fiscal Year End: 12/31/2025

Industry, Sector and Symbol

• Stock Exchange: NASDAQ
• Sector: Computer and Technology
• Industry: ELEC COMP - SEMIC
• Sub-Industry: Measuring And Control Equipment
• Current Symbol: NASDAQ:QSI
• CIK: 1816431
• Web: www.quantum-si.com
• Phone: 866-688-7374
• Fax: N/A
• Employees: 150
• Year Founded: N/A

Price Target and Rating

• Average Price Target for Quantum-Si: $3.48
• High Price Target: $5.50
• Low Price Target: $1.00
• Potential Upside/Downside: +210.3%
• Consensus Rating: Moderate Buy
• Rating Score (0-4): 2.67
• Research Coverage: 3 Analysts

Profitability

• EPS (Trailing Twelve Months): ($0.68)
• Trailing P/E Ratio: N/A
• Forward P/E Ratio: N/A
• P/E Growth: N/A
• Net Income: -$101.01 million
• Net Margins: -3,120.14%
• Pretax Margin: -3,117.58%
• Return on Equity: -44.57%
• Return on Assets: -39.45%

Debt

• Debt-to-Equity Ratio: N/A
• Current Ratio: 9.43
• Quick Ratio: 9.27

Sales & Book Value

• Annual Sales: $3.06 million
• Price / Sales: 74.11
• Cash Flow: N/A
• Price / Cash Flow: N/A
• Book Value: $1.29 per share
• Price / Book: 0.87

Miscellaneous

• Outstanding Shares: 202,490,000
• Free Float: 156,022,000
• Market Cap: $226.79 million
• Optionable: Optionable
• Beta: 2.85