TotalMarketCap

Quantum-Si

QSINasdaq United StatesIndustrialsIndustrial Machinery/Components

Market cap

$251.716 M

$1.15 -10.85%

Close of 6 Nov 2026

As of 6 Nov 2026, Quantum-Si (QSI) has a market capitalization of $251.7M. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$2.44M

#3370 by revenue

Earnings

-$101.3M

Loss-making

Shares outstanding

—

Latest filing cover page

P/E ratio

—

Cap ÷ net income

Industrial Machinery/Components, ranked by market cap

All 210 →
  1. #128A2z Cust2mate SolutionsAZ$259.7M
  2. #129Graftech InternationalEAF$254.0M
  3. #130Quantum-SiQSI$251.7M
  4. #131NnNNBR$251.2M
  5. #132M-tron IndustriesMPTI$250.1M

What if Quantum-Si were worth as much as…

Open the what-if tool →

Gold $28.2T

$129,003.88

Per share 112,177× higher

Bitcoin $1.53T

$6,980.18

Per share 6,070× higher

Apple $5.02T

$22,915.26

Per share 19,926× higher

Or at a round number

$500.0M$1.00B$2.00B$5.00B

Where these numbers come from

Share counts and financials for Quantum-Si are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Read the methodology.