Stock Fundamentals

Company Information

Company Name
QuantumSi Inc
Sector
Healthcare
Industry
Medical Devices
Exchange
NASDAQ
ISIN: US74765K1051
CIK: 0001816431
CUSIP: 74765K105
Currency: USD
Full Time Employees: 145
Phone: 866 688 7374
Fiscal Year End: December
IPO Date: Jun 10, 2021
Description:

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 sequencing kits, which contain the reagents and consumables used to perform NGPS. It also provides Platinum analysis software, a cloud-based solution that automates data analysis workflows and visualizes the sequencing results. The company was founded in 2013 and is headquartered in Branford, Connecticut.

Address:

29 Business Park Drive, Branford, CT, United States, 06405

Directors & Officers

Name Title Year Born
Mr. Jeffrey Alan Hawkins President, CEO & Director 1978
Dr. Jonathan M. Rothberg Ph.D. Founder & Executive Director 1964
Mr. Jeffry R. Keyes CPA CFO & Treasurer 1973
Dr. John S. Vieceli Ph.D. Chief Product Officer 1977
Mr. Todd Rearick Chief Technology Officer NA
Dr. Christian Lapointe J.D., Ph.D. General Counsel & Corporate Secretary 1972
Ms. Lindsay Thompson Chief Human Resources Officer NA

Insider Trading

Date Insider Name Title Transaction Type Shares Price Value
Apr 21, 2026 Jeffry R Keyes N/A Sale 37.38K $0.99 $37.01K
Apr 20, 2026 Jeffrey Alan Hawkins N/A Sale 83.71K $1.01 $84.55K
Apr 20, 2026 Jeffry R Keyes N/A Sale 37.38K $1.01 $37.76K
Mar 23, 2026 Jeffrey Alan Hawkins N/A Sale 12.15K $0.83 $10.08K
Mar 23, 2026 Jeffry R Keyes N/A Sale 4.42K $0.83 $3.67K
Mar 23, 2026 John S Vieceli N/A Sale 11.24K $0.83 $9.33K
Mar 20, 2026 Jeffrey Alan Hawkins N/A Sale 11.63K $0.85 $9.88K
Mar 20, 2026 Jeffry R Keyes N/A Sale 4.23K $0.85 $3.60K
Mar 20, 2026 John S Vieceli N/A Sale 10.76K $0.85 $9.14K
Mar 05, 2026 Charles R Kummeth N/A Purchase 500.00K $0.92 $460.00K
Mar 05, 2026 Paula Dowdy N/A Purchase 109.89K $0.95 $104.40K
Dec 22, 2025 Jeffrey Alan Hawkins N/A Sale 23.71K $1.28 $30.34K
Dec 22, 2025 John S Vieceli N/A Sale 21.93K $1.28 $28.07K
Dec 22, 2025 Jeffry R Keyes N/A Sale 8.63K $1.28 $11.04K
Oct 16, 2025 Jonathan M Rothberg N/A Sale 26.10K $3.07 $80.11K
Sep 22, 2025 Jeffrey Alan Hawkins N/A Sale 10.64K $1.68 $17.88K
Sep 22, 2025 Jeffry R Keyes N/A Sale 3.87K $1.68 $6.51K
Sep 22, 2025 John S Vieceli N/A Sale 9.84K $1.68 $16.54K
Sep 22, 2025 Todd C Bennett N/A Sale 18.48K $1.68 $31.05K
Jun 23, 2025 Jeffrey Alan Hawkins N/A Sale 23.71K $1.61 $38.17K

Institutional Holders

Holder Name Shares Date Reported % Out Value % Change
BlackRock Inc 13.41M Mar 31, 2026 6.16% $0.00 2.76%
Vanguard Group Inc 9.61M Dec 31, 2025 4.41% $0.00 10.24%
Vanguard Capital Management, LLC 7.02M Mar 31, 2026 3.22% $0.00 0.00%
ARK Investment Management LLC 6.88M Mar 31, 2026 3.16% $0.04 -2.03%
Amova Asset Management Americas, Inc 4.39M Mar 31, 2026 2.02% $0.05 -6.38%
Sumitomo Mitsui Trust Group Inc 4.39M Mar 31, 2026 2.02% $0.00 -6.38%
Geode Capital Management, LLC 3.84M Mar 31, 2026 1.76% $0.00 -6.79%
State Street Corp 3.77M Mar 31, 2026 1.73% $0.00 5.84%
AQR Capital Management LLC 2.39M Mar 31, 2026 1.10% $0.00 2,659.50%
UBS Group AG 1.70M Mar 31, 2026 0.78% $0.00 17.46%
Vanguard Portfolio Management, LLC 1.52M Mar 31, 2026 0.70% $0.00 0.00%
Susquehanna International Group, LLP 1.46M Mar 31, 2026 0.67% $0.00 -37.08%
Northern Trust Corp 1.26M Mar 31, 2026 0.58% $0.00 -42.90%
Vanguard Fiduciary Trust Co 1.12M Mar 31, 2026 0.51% $0.00 0.00%
Fosun International Ltd 743.94K Mar 31, 2026 0.34% $0.14 0.00%
Charles Schwab Investment Management Inc 457.57K Mar 31, 2026 0.21% $0.00 -2.26%
Nuveen, LLC 451.37K Mar 31, 2026 0.21% $0.00 0.86%
The Goldman Sachs Group Inc 444.18K Mar 31, 2026 0.20% $0.00 14.83%
Amvescap Plc. 406.69K Mar 31, 2026 0.19% $0.00 0.96%
XTX Topco Ltd 389.25K Mar 31, 2026 0.18% $0.01 -15.74%

Shares Statistics

Shares Outstanding: 197.82M
Shares Float: 179.19M
% Insiders: 1,051.30%
% Institutions: 2,992.70%
Short % Float: 9.82%

Fund Holdings

Rank Holder Name Shares Held % of Shares Change Date Reported
1 ARK Genomic Revolution 6.53M 3.00% ▼ 2.98% Mar 31, 2026
2 ARK Genomic Revolution ETF 6.33M 2.90% ▼ 0.26% May 31, 2026
3 Vanguard Total Stock Mkt Idx Inv 4.87M 2.24% ▲ 0.00% Apr 30, 2026
4 iShares Russell 2000 ETF 4.07M 1.87% ▲ 0.93% May 29, 2026
5 Amova ARK Pstv Chg Innovt P JPY Acc 3.56M 1.64% ▼ 0.99% Apr 30, 2026
6 Vanguard Institutional Extnd Mkt Idx Tr 2.00M 0.92% ▲ 0.00% Apr 30, 2026
7 Fidelity Small Cap Index 1.66M 0.76% ▲ 7.02% Mar 31, 2026
8 iShares Russell 2000 Value ETF 1.47M 0.68% ▲ 0.00% May 29, 2026
9 iShares Biotechnology ETF 1.28M 0.59% ▲ 1.95% May 29, 2026
10 State St Russell Sm/Mid Cp® Indx SL Cl I 1.24M 0.57% ▲ 0.00% May 31, 2026

Valuation Metrics

Enterprise Value: $68.59M
Trailing P/E: 0.00
Forward P/E: 0.00

Financial Highlights

Market Cap: $192.22M
EBITDA: $-91.23M
Book Value: $0.92
Earnings/Share: $-0.50
Profit Margin: 0.00%
Operating Margin: -9,322.87%
ROA (TTM): -24.76%
ROE (TTM): -46.38%
Revenue (TTM): $1.85M
Revenue/Share (TTM): $0.01
Earnings Growth (YOY): 0.00%
Revenue Growth (YOY): -69.40%

Stock Price History

1 Year Price History

2 Years Price History

5 Years Price History

10 Years Price History

Financial Charts

Revenue & Net Income (Yearly)

Revenue & Net Income (Quarterly)

Operating Expenses (Yearly)

Operating Expenses (Quarterly)

Balance Sheet (Yearly)

Balance Sheet (Quarterly)

Assets Breakdown (Yearly)

Assets Breakdown (Quarterly)

Liabilities Breakdown (Yearly)

Liabilities Breakdown (Quarterly)

Earnings Per Share (EPS) History

Financial Ratios

Balance Sheet (Yearly)

Financial Ratios

Date Current Ratio Debt/Equity Debt/Assets Interest Coverage Debt/EBITDA
2025-12-31 7.64x 0.01x 0.10x N/A -0.02x
2024-12-31 11.99x 0.02x 0.13x N/A -0.04x
2023-12-31 22.94x 0.01x 0.09x N/A -0.02x
2022-12-31 22.81x 0.00x 0.08x -9.35x -0.01x
2021-12-31 41.39x 0.00x 0.05x -19,381.60x -0.01x
2020-12-31 13.75x 0.06x 0.11x -4,076.78x -0.06x
2019-12-31 17.57x 0.00x 0.05x N/A 0.00x

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