Filing Flows › Quantum-Si (QSI) › Q3 2025
Quantum-Si (QSI) Q3 2025 earnings results (third quarter 2025)
10-Q filed Nov 5, 2025
Quantum-Si (QSI) reported revenue of $552K for the third quarter 2025 (Q3 2025), -30% from a year earlier and -7% from the quarter before.
Quantum-Si, Q3 2025: revenue $552K (-30% year over year), net loss $35.7M, operating cash flow −$32.0M. The chart follows the revenue to costs, profit and cash.
| Q3 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $552K | -7% | -30% |
| Operating profit | −$39.8M | — | — |
| Net earnings | −$35.7M | — | — |
| Operating cash flow | −$32.0M | — | — |
What changed
Revenue was $552K in Q3 2025, down 30% year over year and down 7% from the previous quarter. Product was the largest line at 91% of revenue. Product lost $259K year over year (down 34%), 110% of the total change.
Gross margin was 35.1%, down 11.5 points from a year earlier. Operating costs exceeded revenue by $39.8M, an operating margin of -7205.3%. Operating expenses grew 40% against a revenue fall of 30%. The quarter ended with a net loss of $35.7M, wider than the previous quarter's $28.8M loss.
Operating cash flow was −$32.0M. Non-cash charges added back $1.2M of depreciation and amortization and $2.8M of share-based compensation. Capital expenditures of $900K exceeded it, leaving free cash flow of −$32.9M.
Questions
What was Quantum-Si's revenue in the third quarter 2025?
Quantum-Si (QSI) reported revenue of $552K for the third quarter 2025 (Q3 2025), -30% from a year earlier and -7% from the quarter before.
Source: Quantum-Si 10-Q on SEC EDGAR.