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QSI
Quantum-Si Incorporated Class A Common Stock
stock NASDAQ

At Close
Mar 31, 2026 3:59:30 PM EDT
0.7777USD+5.408%(+0.0399)2,872,471
0.00Bid   0.00Ask   0.0000Spread
Pre-market
Mar 31, 2026 9:25:30 AM EDT
0.7589USD+2.860%(+0.0211)33,036
After-hours
Mar 31, 2026 4:54:30 PM EDT
0.7900USD+1.582%(+0.0123)68,867
OverviewOption ChainMax PainOptionsHistoricalExchange VolumeDark Pool LevelsDark Pool PrintsExchangesShort VolumeShort Interest - DailyShort InterestBorrow Fee (CTB)Failure to Deliver (FTD)ShortsTrendsNewsMore
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Market Cap
169.22M
Industry
Biotechnology
Next Earnings
May 21, 2026 (50d)
QSI Stats
Avg. Vol. 10 Day
3,150,446
Avg. Vol. 30 Day
3,380,638
Employees
196
Market Cap
169,222,017
Shares Out.
216,368,773
On/Off Exchange
39%/61%
6 Month Beta
3.86
1 Year Beta
2.25
2 Year Beta
2.20
3 Year Beta
2.39
52 Week Low
0.73
52 Week High
3.10
SMA50
1.00
SMA200
1.40
1 Week
-8.11%
1 Month
-17.50%
3 Month
-28.90%
6 Month
-46.43%
1 Year
-34.83%
2 Year
-57.72%
5 Year
-93.44%
Profile
at quantum-si we have a created a very unique environment where bright, highly committed individuals are given the freedom, ownership, and resources to solve tough problems and be the first to do new science. we are fully-funded by successful founders so employees can focus on creating, building, learning, and getting to market products that will change the world. if you are looking for a new challenge, check out our job postings at https://www.4catalyzer.com empower discovery. empower health. empower you.

QSI Stock Summary

Quantum-Si Incorporated Class A Common Stock (NASDAQ:QSI) stock price today is $0.7777, and today's volume is 2,872,471. QSI is up 5.408% today. The 30 day average volume is 3,380,638. QSI market cap is 169.22M with 216,368,773 shares outstanding.



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