stockNASDAQ: QSI • Today's Updates
Quantum-Si Incorporated (QSI) Today Close
Showing Closing Date Range from Oct 7 to Oct 8, 2026.
Investor Relations:quantum-si.com
NASDAQ MarketTrading In Progress Wall Street: 1:10 PM ET
Market Is Open • Trading In Progress
US markets (NASDAQ / NYSE) are in active trading (9:30 AM – 4:00 PM ET). Official closing rates settle after 4:15 PM ET. Showing active session data (Oct 07, 2026) as of 1:10 PM ET.
Multi-Day Trends:View 28-Day Chart
Started At
Market Open Opening price at session start (9:30 AM ET)
$1.17
Opening Gap$-0.05(-4.10%)
Last Recorded Trade Price
LAST RECORDEDLast recorded trade as of 1:10 PM ET
$1.28
Session DateOct 07, 2026
Gained Today
GAIN Net movement vs previous close
+$0.06 (+4.92%)
Intraday (from open)+$0.11 (+9.40%)
Day's High & Low Range
Session Low
$1.09
Session High
$1.31
Low ($1.09)Last Recorded Trade Price ($1.28)High ($1.31)
Trading Activity & Liquidity
Shares Traded
8.00M
8,001,000 shares
Dollar Volume
$10.24M
Close × Volume traded
Session Turnover$10.24M USD
Session Statistics Breakdown
Key opening, settlement, and trading metrics for Quantum-Si Incorporated (QSI).
Oct 07, 2026
Started At (Open)
$1.17
Previous Close
$1.22
Session High
$1.31
Session Low
$1.09
Last Recorded Trade Price
$1.28
Gained / Lost ($)
+$0.06
Gained / Lost (%)
+4.92%
Day's Spread
$0.22