$QSI
Price history, market instrument context, member research, and related headlines in one place.
QSI key statistics
NasdaqGMUSD
52-week range
$0.6929%$3.10
Latest session $1.33–$1.44Quantum-Si incorporated (QSI) is a stock instrument quoted on NasdaqGM in USD. The most recently published price is $1.39, down $0.02 (1.42%) from the previous close of $1.41. It has traded between $1.33 and $1.44 in the latest session. Over the past year it has ranged from $0.69 to $3.10, leaving it in the lower half of its 52-week range (29%). Reported volume for the session was 5.3M. Figures are the latest published by the exchange feed and are not a recommendation.
Primary market bars from Yahoo Finance · Extended-hours prints appear when supplied by the venue · Interactive charts powered by TradingView Lightweight Charts™ · Not a recommendation
Source-linked intelligence
Related news
Quantum-Si outlines Proteus launch shift to Q2 2027 while targeting $12M annual opex savings — See source for full details.
Quantum-Si (QSI) Q2 earnings: GAAP EPS beat, revenue down 42% but above estimates; FY2026 guidance reiterated.
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