Quantum-Si Reports Q1 2026 Results: Revenue Plunges 69% Amid Proteus Launch Anticipation, EPS Beats Estimates
QSI sits 35% above its 52-week low of $0.691.
Summary
Quantum-Si Inc. reported a significant 69.4% year-over-year revenue decline to $258,000 for Q1 2026, primarily due to customer deferrals ahead of its Proteus platform launch, while its net loss increased to $21.7 million, though EPS of $(0.10) beat analyst expectations.
Key Events · Earnings and Guidance · QSI
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Q1 2026 Revenue Plunges 69%
Total revenue decreased 69.4% year-over-year to $258,000, primarily driven by lower sales volumes of instruments and consumables as customers deferred purchasing decisions in anticipation of the Proteus platform launch.
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Net Loss Increases, EPS Beats Estimates
Net loss increased to $21.7 million for Q1 2026 from $19.2 million in Q1 2025. However, basic and diluted net loss per share of $(0.10) was better than the $(0.11) loss expected by analysts.
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Liquidity Position and Cash Burn
The company held $190.4 million in cash, cash equivalents, and marketable securities as of March 31, 2026. Net cash used in operating activities for the quarter was $25.6 million, with management stating current liquidity is sufficient for at least the next twelve months.
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Legal Settlement Finalized
A Delaware Stockholder Litigation was settled on March 27, 2026. The company paid $3.0 million, with the remaining $4.6 million of the $8.0 million liability funded by insurance proceeds, resolving this contingency.
Analysis · QSI · Industrial Applications And Services
Quantum-Si Inc.'s first-quarter 2026 financial results show a substantial 69.4% year-over-year decline in total revenue to $258,000. This significant drop is primarily attributed to customers deferring purchases in anticipation of the Proteus next-generation platform, which is expected to launch by the end of 2026. This indicates a material near-term operational challenge and potential continued revenue headwinds. While the net loss increased to $21.7 million, the reported basic and diluted net loss per share of $(0.10) was better than the $(0.11) loss expected by analysts, offering a mixed signal. The company reported $190.4 million in cash, cash equivalents, and marketable securities, which management believes is sufficient to fund operations for at least the next twelve months. Additionally, a Delaware Stockholder Litigation was finalized, resolving a prior $8.0 million liability. Investors should closely monitor the Proteus launch and its subsequent impact on sales and market adoption.
How filings like this one have moved
In the 30 days to Oct 11, 2026, 28.9% of the 1510 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.54%. These are measured outcomes after filings of this importance, not a forecast for this one.
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At the time of this filing, QSI was trading at $0.93 on NASDAQ in the Industrial Applications And Services sector, with a market capitalization of approximately $212.2M. The 52-week trading range was $0.69 to $3.10. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.