# Quantum-Si Inc: overview QSI · Nasdaq · CIK 1816431 · [Technology](/sectors/technology.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/qsi.md) · [Financials](/companies/qsi/financials.md) · [Filings](/companies/qsi/filings.md) · [Insiders](/companies/qsi/insiders.md) Latest reported revenue: [$344.0k](/filings/0001816431-26-000056.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 13, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001816431-26-000056). ## Last eight quarters | Line item | Unit | Q3 FY2024 (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [0.8](/filings/0001816431-25-000066.md) | [1.2 d](/filings/0001816431-26-000011.md) | [0.8](/filings/0001816431-26-000034.md) | [0.6](/filings/0001816431-26-000056.md) | [0.6](/filings/0001816431-25-000066.md) | [0.5 d](/filings/0001816431-26-000011.md) | [0.3](/filings/0001816431-26-000034.md) | [0.3](/filings/0001816431-26-000056.md) | | Gross margin | % | [46.6%](/filings/0001816431-25-000066.md) | [51.2% d](/filings/0001816431-26-000011.md) | [57.7%](/filings/0001816431-26-000034.md) | [59.4%](/filings/0001816431-26-000056.md) | [35.1%](/filings/0001816431-25-000066.md) | [27.1% d](/filings/0001816431-26-000011.md) | [28.7%](/filings/0001816431-26-000034.md) | [50.0%](/filings/0001816431-26-000056.md) | | Operating margin | % | [(3569.0%)](/filings/0001816431-25-000066.md) | [(2573.6%) d](/filings/0001816431-26-000011.md) | [(2982.4%)](/filings/0001816431-26-000034.md) | [(5096.4%)](/filings/0001816431-26-000056.md) | [(7205.3%)](/filings/0001816431-25-000066.md) | [(4677.2%) d](/filings/0001816431-26-000011.md) | [(9322.9%)](/filings/0001816431-26-000034.md) | [(7450.3%)](/filings/0001816431-26-000056.md) | | Net margin | % | [(3216.4%)](/filings/0001816431-25-000066.md) | [(2778.6%) d](/filings/0001816431-26-000011.md) | [(2279.0%)](/filings/0001816431-26-000056.md) | [(4879.2%)](/filings/0001816431-26-000056.md) | [(6467.9%)](/filings/0001816431-25-000066.md) | [(3904.9%) d](/filings/0001816431-26-000011.md) | [(8399.6%)](/filings/0001816431-26-000056.md) | [(6841.3%)](/filings/0001816431-26-000056.md) | | Diluted EPS | $ per share | [(0.18)](/filings/0001816431-25-000066.md) | not reported | [(0.11)](/filings/0001816431-26-000034.md) | [(0.16)](/filings/0001816431-26-000056.md) | [(0.17)](/filings/0001816431-25-000066.md) | not reported | [(0.10)](/filings/0001816431-26-000034.md) | [(0.11)](/filings/0001816431-26-000056.md) | | Free cash flow | $m | [(24.1) d](/filings/0001816431-25-000066.md) | [(24.3) d](/filings/0001816431-26-000011.md) | [(27.5)](/filings/0001816431-26-000034.md) | [(20.5) d](/filings/0001816431-26-000056.md) | [(32.9) d](/filings/0001816431-25-000066.md) | [(16.4) d](/filings/0001816431-26-000011.md) | [(25.9)](/filings/0001816431-26-000034.md) | [(18.5) d](/filings/0001816431-26-000056.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [0.0](/filings/0001140361-24-010438.md) | [0.0](/filings/0001816431-25-000014.md) | [1.1](/filings/0001816431-26-000011.md) | [3.1](/filings/0001816431-26-000011.md) | [2.4](/filings/0001816431-26-000011.md) | | Gross margin | % | not reported | not reported | [45.1%](/filings/0001816431-26-000011.md) | [52.3%](/filings/0001816431-26-000011.md) | [47.3%](/filings/0001816431-26-000011.md) | | Operating margin | % | not reported | not reported | [(10274.6%)](/filings/0001816431-26-000011.md) | [(3550.6%)](/filings/0001816431-26-000011.md) | [(4766.0%)](/filings/0001816431-26-000011.md) | | Net margin | % | not reported | not reported | [(8868.8%)](/filings/0001816431-26-000011.md) | [(3303.0%)](/filings/0001816431-26-000011.md) | [(4160.1%)](/filings/0001816431-26-000011.md) | | Diluted EPS | $ per share | [(1.19)](/filings/0001140361-24-010438.md) | [(0.95)](/filings/0001816431-25-000014.md) | [(0.68)](/filings/0001816431-26-000011.md) | [(0.71)](/filings/0001816431-26-000011.md) | [(0.51)](/filings/0001816431-26-000011.md) | | Free cash flow | $m | [(72.6)](/filings/0001140361-24-010438.md) | [(101)](/filings/0001816431-25-000014.md) | [(98.5)](/filings/0001816431-26-000011.md) | [(92.4)](/filings/0001816431-26-000011.md) | [(97.2)](/filings/0001816431-26-000011.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/qsi/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $6.7m | 7,578,208 | | Added +556,301 | | [ARK Investment Management LLC](/funds/1697748.md) | 2026-06-30 | $6.3m | 7,167,738 | | Added +288,839 | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $4.6m | 5,225,352 | | Reduced −8,189,597 | | [Amova Asset Management Americas, Inc.](/funds/1480751.md) | 2026-06-30 | $3.5m | 3,885,230 | | Reduced −506,436 | | [Sumitomo Mitsui Trust Group, Inc.](/funds/1475365.md) | 2026-06-30 | $3.4m | 3,885,230 | | Reduced −506,436 | | [MILLENNIUM MANAGEMENT LLC](/funds/1273087.md) | 2026-06-30 | $2.8m | 3,131,726 | | New +3,131,726 | | [UBS Group AG](/funds/1610520.md) | 2026-06-30 | $2.3m | 2,561,897 | | Added +859,370 | | [AQR CAPITAL MANAGEMENT LLC](/funds/1167557.md) | 2026-06-30 | $2.1m | 2,348,665 | | Reduced −43,514 | | [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $2.0m | 2,236,526 | | Reduced −1,598,595 | | [JANE STREET GROUP, LLC](/funds/1595888.md) | 2026-06-30 | $1.9m | 2,142,735 | | New +2,142,735 | ## Recent filings [All 470 filings](/companies/qsi/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-10-15 | 13:15 ET | [8-K](/filings/0001816431-26-000068.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001816431-26-000068 | | 2026-10-08 | 20:12 ET | [8-K](/filings/0001816431-26-000064.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-26-000064 | | 2026-09-29 | 00:29 ET | [8-K](/filings/0001816431-26-000061.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001816431-26-000061 | | 2026-08-28 | 21:35 ET | [SCHEDULE 13D/A](/filings/0001140361-26-034869.md) | Ownership report, active investor, amended | 0001140361-26-034869 | | 2026-08-13 | 20:55 ET | [10-Q](/filings/0001816431-26-000056.md) | Quarterly report, period 2026-06-30 | 0001816431-26-000056 | | 2026-08-13 | 20:11 ET | [8-K](/filings/0001816431-26-000053.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001816431-26-000053 | | 2026-07-24 | 21:21 ET | [8-K](/filings/0001816431-26-000049.md) | 3.01 Delisting notice | 0001816431-26-000049 | | 2026-06-24 | 20:06 ET | [8-K](/filings/0001816431-26-000046.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001816431-26-000046 | | 2026-05-15 | 20:14 ET | [8-K](/filings/0001816431-26-000037.md) | 5.07 Shareholder vote results | 0001816431-26-000037 | | 2026-05-07 | 20:47 ET | [10-Q](/filings/0001816431-26-000034.md) | Quarterly report, period 2026-03-31 | 0001816431-26-000034 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001816431-26-000011.md), filed Mar 3, 2026. ## Forecast league Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/c64d22ae-52e4-49e0-a3b5-c11b55587a1f) ## About the filer - CIK: 1816431 - Tickers: QSI - Exchange: Nasdaq - SIC code: 3829 Measuring & Controlling Devices, NEC - State of incorporation: DE - Filer category: Non-accelerated filer
Smaller reporting company Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:48 ET. No prices; not investment advice.