Quantum-Si - Class A opened lower at $1.17, compared with its previous close of $1.27. In the last trading session, the stock traded between $1.16 and $1.25. It showed a downward intraday trend.
An investment of $100 made 5 years ago in Quantum-Si - Class A is now worth
$ 15.58
Resulting in a loss of
$ 84.42 (84.42%)
Note: Past profits do not guarantee future returns.
Rating from 3 Analysts
Today's Change
$-0.04 (-3.46%)
Day High
$1.25
Day Low
$1.16
Day Open
$1.17
Prev Close
$1.27
Volume
51,37,959
1W Return
-4.59%
1M Return
-10.18%
3M Return
48.43%
6M Return
32.94%
1Y Return
-22.41%
Market Cap ($ Mn)
245
PE Ratio
-
PB Ratio
0.95
PEG Ratio
-
ROE
-44.50%
ROCE
-46.74%
EPS (TTM)
$-0.10
1 Week
-4.59%
1 Month
-10.18%
3 Months
48.43%
6 Months
32.94%
9 Months
17.88%
Quantum-Si Q3 revenue falls to $212K as Proteus launch nears
Revenue fell to $212,000 in Q3 2026 from $552,000 in Q3 2025. Adjusted operating expenses declined to $18.2 million from $21.4 million. Net loss narrowed to $22.3 million from $35.7 million in the prior year. Proteus platform remains on track for commercial launch in Q2 2027. Full-year adjusted operating expense guidance lowered to $87 million or less.
7 days agoQuantum-Si regains compliance with Nasdaq minimum bid price rule
Quantum-Si regained compliance with Nasdaq's minimum bid price requirement. Closing bid price stayed at or above $1.00 for 10 consecutive business days. Nasdaq confirmed the matter is closed under Listing Rule 5450(a)(1). Company operates in proteomics with single-molecule protein sequencing platform.
28 days agoQuantum-Si detects 19 amino acids, shares jump 27.87%
Quantum-Si Inc shares rose 27.87% to $1.551 following the announcement. Proteus sequencer now detects 19 of 20 amino acids in development program. CEO Jeff Hawkins targets detection of all 20 amino acids by end of 2026. Commercial launch of Proteus platform remains scheduled for Q2 2027.
1mo agoQuantum-Si stock up 24% as Proteus shows 30x alignment gain
Quantum-Si stock rose 24.39% to $0.98 on Tuesday following new Proteus data. Proteus platform demonstrated a 30-fold increase in median alignments vs Platinum Pro. Session trading volume hit 20.54 million shares, roughly 7x the 100-day average. False discovery rate dropped to 1.36% for Proteus compared to 6.58% for Platinum Pro. Commercial launch of Proteus is anticipated for the second quarter of 2027.
1mo agoQuantum-Si detects 18 amino acids on Proteus sequencing kit
Quantum-Si detected 18 amino acids using a developmental kit on Proteus instruments. Company maintains goal to detect all 20 amino acids in 2026. CEO cites pace of improvement exceeding expectations. Revised timeline allows further recognizer development before launch formulation.
1mo agoQuantum-Si Q2 EPS $(0.11) beats estimate as revenue hits $344k
Quantum-Si reported Q2 2026 EPS of $(0.11), beating the $(0.12) estimate, while revenue of $344,000 exceeded the $302,000 forecast. Despite beating estimates, revenue fell 42% YoY due to limited Platinum platform sales. The company delayed the Proteus launch to Q2 2027 to improve manufacturing readiness and cut headcount by 20% to save $12 million annually.
3mo ago| Stock | LTP | Change % | Market Cap | PE |
|---|---|---|---|---|
| $109.29 | -1.06% | $1,89,283.94M | 36.28 | |
| $449.53 | -0.11% | $1,55,826.88M | 42.73 | |
| $101.61 | +0.02% | $1,29,976.46M | 24.46 | |
| $318.79 | -1.70% | $1,21,360.48M | 34.27 | |
| $45.13 | +0.96% | $65,414.72M | 18.96 | |
| $105.81 | +1.73% | $60,840.75M | 53.70 | |
| $214.52 | +0.90% | $58,432.46M | 44.07 | |
| $82.60 | -1.26% | $37,346.60M | 16.49 | |
| $42.16 | +3.06% | $37,044.18M | 89.05 | |
| $72.46 | -2.16% | $35,027.16M | 54.55 | |
| $237.20 | +1.61% | $33,458.08M | 23.04 | |
| $80.35 | +0.53% | $29,964.75M | 36.04 |
An investment of $100 made 5 years ago in Quantum-Si - Class A is now worth
$ 15.58
Resulting in a loss of
$ 84.42 (84.42%)
Note: Past profits do not guarantee future returns.
