Latest revenue
$258.0K
as of 2026-03-31
Latest net income
$-21.7M
as of 2026-03-31
Net margin
-8399.6%
as of 2026-03-31
Price · 5Y
Live market
delayed ≤15 min- Market cap
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- Enterprise value
- —
- P/E (trailing)
- —
- Forward P/E
- —
- P/B
- —
- Dividend yield
- 0.0%
- 52-wk high
- $3.10
- 52-wk low
- $0.69
- Beta
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- Shares out
- —
5-year trend
What this company does
ITEM 1. BUSINESS Overview Quantum-Si Incorporated (including its subsidiaries, “Quantum-Si”, “QSI”, or the “Company”) was incorporated in Delaware on June 10, 2020 as HighCape Capital Acquisition Corp. (“HighCape”). The Company’s legal name became Quantum-Si Incorporated following a business combination on June 10, 2021 between the Company and Q-SI Operations Inc. (formerly Quantum-Si Incorporated) (the “Business Combination”), which was founded in 2013. We are a life sciences company focused on proteomics research, with the mission of transforming single-molecule analysis and democratizing its use by providing researchers and clinicians access to the proteome, the set of proteins expressed…
AI summary unavailable — showing raw filing excerpt
Generated from QSI's filing dated 2026-03-03
Key risks
Table of Contents ITEM 1A. RISK FACTORS Careful consideration should be given to the following risk factors, in addition to the other information set forth in this Annual Report, including the section of this Annual Report titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our Consolidated Financial Statements and related Notes, and in other documents that we file with the SEC, in evaluating our company and our business. Investing in our securities involves a high degree of risk. If any of the events described in the following risk factors actually occur, our business, financial condition, results of operations and future growth prospects…
AI summary unavailable — showing raw filing excerpt
Generated from QSI's filing dated 2026-03-03
Profitability
Gross margin
47.3%
9.5%Operating margin
-4766.0%
34.2%Net margin
-4160.1%
25.9%Return on equity
-46.0%
23.7%Return on assets
-41.3%
1.3%Leverage
Debt / equity
0.12×
231.8%Long-term debt / equity
0.00×
Debt / assets
10.3%
207.9%Earnings tracker
| Quarter | Revenue | YoY | Net income | YoY | Net margin |
|---|---|---|---|---|---|
Q1 2026 2026-03-31 | $258.0K | -69.4% | $-21.7M | -12.9% | -8399.6% |
Q4 2025 2025-12-31 | $451.0K | -62.2% | $-17.6M | +46.8% | -3904.9% |
Q3 2025 2025-09-30 | $552.0K | -29.9% | $-35.7M | -41.0% | -6467.9% |
Q2 2025 2025-06-30 | $591.0K | -5.0% | $-28.8M | -24.8% | -4879.2% |
Q1 2025 2025-03-31 | $842.0K | +84.2% | $-19.2M | +1.5% | -2279.0% |
Q4 2024 2024-12-31 | $1.2M | — | $-33.1M | — | -2778.6% |
Q3 2024 2024-09-30 | $787.0K | +252.9% | $-25.3M | -2.4% | -3216.4% |
Q2 2024 2024-06-30 | $622.0K | +203.4% | $-23.1M | +9.7% | -3713.7% |
Year-over-year change vs the same fiscal quarter one year prior. Revenue + net income sourced from SEC 10-Q / 10-K filings — no analyst-consensus dependency.
Industry trend
Measuring & Controlling Devices, NEC · SIC 3829
Your notes
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Insider activity
Insider buying
$564.3K
Insider selling
$729.3K
Net activity
−$165.0K
Distinct insiders
8
Open-market trades over the last 365 days.
Recent transactions
Source: SEC Form 4 filings. Officers, directors, and 10%+ owners must disclose share transactions within two business days. RSU grants and tax-withholding rows are excluded by default — compensation activity is not a trading signal.
Who owns QSI
Institutional value
$34.9M
Total shares held
45.1M
Distinct holders
97
-38 vs prior
As of
2026-03-31
Prior: 2025-12-31
Filers with $100M+ AUM disclose holdings 45 days after quarter end.
Top institutional holders
| # | Manager | Shares | Value | QoQ change | Action |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.4M | $10.4M | +360.9K (+2.8%) | Added |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 7.0M | $5.4M | — | New |
| 3 | ARK Investment Management LLC | 6.9M | $5.3M | -142.7K (-2.0%) | Trimmed |
| 4 | Nikko Asset Management Americas, Inc. | 4.4M | $3.4M | -299.1K (-6.4%) | Trimmed |
| 5 | Sumitomo Mitsui Trust Group, Inc. | 4.4M | $3.4M | -299.1K (-6.4%) | Trimmed |
| 6 | UBS Group AG | 1.7M | $1.3M | +253.0K (+17.5%) | Added |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5M | $1.2M | — | New |
| 8 | VANGUARD FIDUCIARY TRUST CO | 1.1M | $864.8K | — | New |
| 9 | Nuveen, LLC | 451.4K | $349.4K | +3.8K (+0.9%) | Added |
| 10 | Invesco Ltd. | 406.7K | $314.8K | +3.9K (+1.0%) | Added |
| 11 | Bank of New York Mellon Corp | 383.1K | $296.5K | -23.2K (-5.7%) | Trimmed |
| 12 | IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 292.1K | $226.1K | +38.2K (+15.1%) | Added |
| 13 | GROUP ONE TRADING LLC | 284.0K | $219.8K | +38.2K (+15.5%) | Added |
| 14 | IMC-Chicago, LLC | 220.9K | $171.0K | — | New |
| 15 | CIBC Bancorp USA Inc. | 208.5K | $161.4K | — | New |
| 16 | Verdence Capital Advisors LLC | 203.9K | $157.8K | +16.1K (+8.5%) | Added |
| 17 | Mariner, LLC | 199.7K | $154.5K | +142.8K (+251.1%) | Added |
| 18 | RHUMBLINE ADVISERS | 193.1K | $149.4K | -527 (-0.3%) | Trimmed |
| 19 | DEUTSCHE BANK AG\ | 119.0K | $91.7K | +0 (+0.0%) | No change |
| 20 | LOS ANGELES CAPITAL MANAGEMENT LLC | 116.3K | $90.0K | +23.3K (+25.1%) | Added |
Source: SEC Form 13F-HR. Positions aggregated across sub-managers within each firm. Options (puts/calls) excluded — common stock only.
Top questions investors are asking
Coming once QSI's latest filing finishes processing.